Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content
Scientific Data Documentation
National Hospital Discharge Survey, 1988-1989
DSN: CC36.NHDS88
     CC36.NHDS89

 
ABSTRACT

 Introduction.--This document and its attachments allow one to use the 1988
 data tape which contains the data collected by the National Hospital Dis-
 charge Survey conducted by the National Center for Health Statistics.  The
 National Hospital Discharge Survey provides a continuous sample of hospital
 discharge records, collecting medical and demographic information for calcu-
 lating statistics on hospital utilization.  The survey consists of data
 abstracted from the face sheets of the medical records for sampled inpatients
 discharged from a national sample of non-Federal short-stay hospitals.  For a
 description of the survey design and data collection procedures, see below.
 For a more detailed description of the survey design, data collection proce-
 dures, and the estimation process, see Reference 1.

BACKGROUND

 To provide more complete and precise information on the utilization of the
 Nation's hospitals and on the nature and treatment of illness among the
 hospitalized population, NCHS in 1962 began exploring possibilities for
 surveying morbidity in hospitals.  A national advisory group was established.
 The NCHS conducted planning discussions with other elements of the Public
 Health Service.  Hospitalization material from the Survey Research Center of
 the University of Michigan, the American Hospital Association, and the
 Professional Activities Study was examined and evaluated. In 1963, a study by
 the School of Public Health of the University of Pittsburgh under contract to
 the NCHS demonstrated the feasibility of an NHDS type of program.  An
 additional pilot study using enumerators from the Bureau of the Census was
 conducted in late 1964 and confirmed the University of Pittsburgh's findings.

 Finally, with advice and support from the American Hospital Association, the
 American Medical Association, individual experts, other professional groups,
 and elements of the U.S. Public Health Service, the NCHS initiated the
 National Hospital Discharge Survey in 1964.

POPULATION DESCRIPTION

 Source of the Data.--The National Hospital Discharge Survey (NHDS) covers
 discharges from noninstitutional hospitals, exclusive of Federal, military,
 and Veterans Administrative hospitals, located in the 50 States and the
 District of Columbia.  Only short-stay hospitals (hospitals with an average
 length of stay for all patients of less than 30 days) or those whose
 specialty is general (medical or surgical) or children's general are included
 in the survey.  These hospitals must also have six or more beds staffed for
 patient use.

METHODS
 Sampling Frame and Size of Sample

 Beginning with 1988, the NHDS sampling frame consisted of hospitals that were
 listed in APRIL 1987 SMG Hospital Market Tape (2), met the above criteria,
 and began accepting patients by August 1987.  For 1988 the sample consisted
 of 542 hospitals.  Of the 542 hospitals, 11  were found to be out of scope
 (ineligible because they went out of business or otherwise failed to meet the
 criteria for the NHDS universe.  Of the 531 inscope (eligible) hospitals, 422
 hospitals responded to the survey. For 1989 the sample consisted of 542
 hospitals.  Of the 542 hospitals, 16 were found to be out of scope (ineligi-
 ble) because they went out of business or otherwise failed to meet the
 criteria for the NHDS universe. Of the 526 inscope (eligible) hospitals, 408
 hospitals responded to the survey.

 Sample Design and Data Collection

 The NCHS has conducted the NHDS continuously since 1965.  The original sample
 was selected in 1964 from a frame of short-stay hospitals listed in the
 National Master Facility Inventory.  That sample was updated periodically
 with samples of hospitals that opened later.  Sample hospitals were selected
 with probabilities ranging from certainty for the largest hospitals to 1 in
 40 for the smallest hospitals.  Within each sample hospital, a systematic
 random sample of discharges was selected.  A report on the design and deve-
 lopment of the original NHDS was published (1).

 In 1988, the NHDS was redesigned to provide geographic sampling comparability
 with other surveys conducted the NCHS; to update the sample of hospitals
 selected into the survey; and to maximize the use of data collected through
 automated systems.  The redesigned NHDS sample included with certainty all
 hospitals with 1,00 or more beds or 40,000 or more discharges annually.  The
 remaining sample of hospitals is based on a stratified three stage design.
 The first stage consists of selection of 112 primary sampling units (PSU's)
 that comprise a probability subsample of PSU's used in the 1985-94 National
 Health Interview Survey.  The second stage consists of selection of non-
 certainty hospitals from the sample PSU's.  At the third stage a sample of
 discharges was selected by a systematic random sampling technique.

 These changes in the survey may affect trend data, that is, some of the
 differences between NHDS statistics based on the 1965-87 sample and stati-
 stics based on the sample drawn for the new design may be due to sampling
 error rathe than changes in hospital utilization.

 The NHDS sampling frame consists of eligible hospitals which began
 accepting inpatients before September 1, 1987, and were listed in the April
 1987 SMG Hospital Market Data Tape (SMG Marketing Group, Inc. 1989).  See
 Appendix I for a more detailed description of the survey redesign.

 Two data collection procedures were used for the survey.  The first was a
 manual system of sample selection and data abstraction.  The second was an
 automated method, used for approximately 37 percent of the respondent
 hospitals, that involved the purchase of data tapes from abstracting
 service organizations.

 In the manual system, the sample selection and the transcription of
 information from the hospital records to abstract forms were performed at the
 hospitals.  The completed forms, along with sample selection control sheets,
 were forwarded to NCHS for coding, editing, and weighing.  A few of these
 hospitals submitted their data via computer printout or tape.  Of the
 hospitals using the manual system, about two thirds had the work
 performed by their own medical records staff.  In the remaining hospitals
 using the manual system, personnel of the U.S. Bureau of the Census did the
 work on behalf of NCHS.

 For the automated system, NCHS purchased tapes containing machine-readable
 medical record data from abstracting service organizations.  Records were
 systematically sampled by NCHS.

 The Medical Abstract Form (Figure 1) and the abstract service data tapes
 contain items relating to the personal characteristics of the patient,
 including birth date or age, sex, race, and marital status, but not name and
 address; administrative information, including admission and discharge dates,
 discharge status, and medical record number; and medical information,
 including diagnoses and surgical and non operations or procedures.  Since
 1977, patient zip code, expected source of payment, and dates of surgery have
 also been collected.  (The medical record number, date of birth, and patient
 zip code are confidential information and are not available to the public.)

Medical Coding and Edit
Medical Coding and Edit, 1988

 The medical information recorded on the sample patient abstracts that were
 collected by the manual system was coded centrally by NCHS staff.  A maximum
 of seven diagnostic codes was assigned for each sample abstract; in addition,
 if the medical information included surgical or nonsurgical procedures, a
 maximum of four codes for these procedures was assigned.  The coding system
 currently used for coding the diagnoses and procedures on the medical ab-
 stract forms, as well as the data that appear on the commercial abstracting
 services data tapes, is the International Classification of Diseases, 9th
 Revision, Clinical Modification, or ICD-0-CM (3).  All of the diagnostic
 codes and most of the procedure codes in the ICD-9-CM are utilized with the
 exception of selected procedure codes in (see Appendix C).

 NHDS usually presents diagnoses and procedures in the order they are listed
 on the abstract form or obtained from abstract services.  There are excep-
 tions. For women discharged after a delivery, a code of V27 from the supple-
 mental classification is entered as the first-listed code.  In another
 exception, a decision was made to reorder some acute myocardial infarction
 diagnoses.  When an acute myocardial infarction is encountered with other
 circulatory diagnoses and is other than the first entry, it is reordered to
 first position.  If a symptom appears as a first-listed code and a diagnosis
 appears as a secondary code, the diagnosis replaces the symptom which is
 moved back.  Following conversion of the data on the medical abstract to
 computer tape and combining it with the automated data tapes, a final medical
 edit was accomplished by computer inspection and by a manual review of
 rejected recorded medical information, priority was given to the medical
 information in the editing decision.

Medical Coding and Edit, 1989

 Users of the National Hospital Discharge Survey (NHDS) diagnostic and/or
 procedure data, which is coded to the ICD-9-CM, must take into account
 annual ICD-9-CM addenda.  The addenda lists new codes, new fourth or fifth
 digits to existing codes as well as other modifications.  A list of the
 changes for October 1986, October 1987, October 1988 and October 1989 are
 listed in Appendix D.  The changes for October 1989 are shown in bold type.

The Uniform Hospital Discharge Data Set (UHDDS)

 Starting with 1979 data, the NHDS has followed guidelines of the Uniform
 Hospital Discharge Data Set (UHDDS) within the confines of its contractual
 agreement with participating hospitals.  The UHDDS is a minimum data set of
 items uniformly designed.  (4)  These items were selected ont he basis of
 their usefulness to a broad range of organizations and agencies requiring
 hospital information, uniformity of definition and general availability from
 medical records and abstract services.

Population Estimates

 Appendix B shows population estimates provided by the U.S. Bureau of the
 Census.  The estimates cover the U.S. civilian resident population on July 1
 of the data year.  These population estimates are consistent with those
 published in Current Population Reports, Series P-25; however, these tables
 are not official population estimates of the Bureau of the Census.

Measurement Errors

 As in any survey, results are subject to nonsampling or measurement errors,
 which include errors due to hospital nonresponse, missing abstracts,
 information incompletely or inaccurately recorded on abstract forms, and
 processing errors.  Less than 1 percent of the discharge records failed to
 include age or sex of patient or date of admission or discharge.  If the
 hospital record did not state age or sex consistent with the age or sex of
 other patients with the same diagnostic codes.  If the dates or admission or
 discharge were not given, and if they could not be obtained from the monthly
 sample listing sheet transmitted by the sample hospital, a length of stay was
 imputed by assigning the patient a stay characteristic of the stay of other
 patients of the same age.  Other edit and imputation procedure may have been
 undertaken by the abstract service organizations, but are not documented
 here.

Sampling Errors and Rounding of Numbers

 The standard error is primarily a measure of sampling variability that occurs
 by chance because only a sample rather than the entire universe is surveyed.
 The relative standard error of the estimate is obtained by dividing the
 standard error by the estimate itself and is expressed as a percent of the
 estimate.  The resulting value is multiplied by 100, so the relative standard
 error is expressed as a percent of the estimate.  Estimates of sampling
 variability were calculated with SESUDAAN software, which computes standard
 errors by using a first-order Taylor approximation of the deviation of
 estimates from their expected values.  A description of the software and
 approach is uses was published (5).

Relative Standard Errors for Aggregate Estimates

 Approximate relative standard errors for aggregate estimates are presented in
 Table-1.  To derive error estimates that would be applicable to a wide
 variety of statistics, numerous variances were calculated and a best fit
 formulate was produced.  The curves were based on a empirically determined
 relationship between the size of an estimate X and its relative variance.

 The relative standard error is then derived by taking the square root of the
 relative variance.  The relative standard error of an estimate X RSE(X)
 may be calculated from the formula:

   RSE(X) = square root of ( a + b/X ) * 100

 with a and b provided in Table 1.

Relative Standard Error for Estimates of Percents

 Approximate relative standard errors (in percent) for estimates of percents
 may be calculated from Table 1.

 Relative standard errors for a percent 100 p (0 p 1) may be calculated
 directly using the formula:

   RSE(p) = 100 * square root of ( b * (1 - p)/(p * X) )

 where 100 p is the percent of interest, X is the base of the percent, and b
 is the parameter b in the formula for approximating the RSE (X).  The values
 for b are given in Table 1.

Parameter Values for Relative Standard Errors
 Parameter Values for Relative Standard Errors, 1988

 Table 1.  Parameter values for relative standard errors 1/ National Hospital
 Discharge Survey aggregate statistics by statistic type:  United States, 1988

 _______________________________________________________________________________
 Estimate (X)                                    Constant a       Constant b

 Number of First-listed/All listed Diagnosis

 Totals or Sex or Age = 15 or
 Race=White or Region=Northeast                  0.00159142         403.12398
 Age 15                                          0.01255108         393.91963
 Region=North Central, West, South
 Race=Nonwhite                                   0.00510648         337.01830
 Bedsize 100 or Race=Unstated                    0.02969914         539.56300
 Bedsize=100+                                    0.01371942         154.82287
 _______________________________________________________________________________

 Days of Care

 Totals or Sex or Age = 15 or Race=White         0.00189727        1730.96623
 A 15 or Region+North Central or West or
 Bedsize = 100                                   0.01376712         930.32656
 Region+Northeast                                0.00421487        1001.41481
 Region=South or Race=Non-White                  0.00768181        1466.82825
 Bedsize 100 or Race=Unstated                    0.03358205        1477.70031
 _______________________________________________________________________________

 Procedures

 Totals or Sex or Age = 15 or Race=White         0.00296686        446.75749
 A 15 or Region=North Central or West            0.01265041        482.10858
 Region=Northeast                                0.00457400        255.98669
 Region=South, Race=Non-White                    0.03795154        512.21880
 Bedsize 100 or Race=Unstated                    0.03795154        512.21880
 Bedsize = 100                                   0.01393281        174.60564
 ______________________________________________________________________________

 1/ Relative standard error (X) = RSE (X) = square root of ( a + b/X ) * 100

 For example, in 1988 the number of discharges from short-stay hospitals for
 females with a first-listed diagnosis of atherosclerotic heart disease (ICD-
 9-CM code 414.0) was 134,000.  Using the applicable constants from Table 1
 for estimates by sex produces:

     RSE(134,000) = square root of ( .001591429 + 403.12398 / 134,00 ) * 100

     RSE(134,000) = 6.78%

 The relative standard error for the estimate of interest is 6.78 percent.
 From this the standard error is obtained by multiplying the relative standard
 error by the estimate:

     134,000 * 6.78% = 9,088

 The standard error can be employed to generate confidence intervals or for
 statistical testing.  In this example, the 68% confidence interval for the
 estimate of female inpatients with a first-listed diagnosis of atherosclero-
 tic heart disease is:

     (134,000 - 9,088) <-> (134,000 + 9,088)

     124,912 <-> 143,088

Parameter Values for Relative Standard Errors, 1989

 Table 1.  Parameter values for relative standard errors 1/ for National
 Hospital Discharge Survey aggregate statistics by statistic type:  United
 States, 1988

 Estimate (X)                                      Constant a    Constant b
 Number of First-listed/All-listed Diagnosis
 Totals; Payment = Medicare, Medicaid, Private,
 Self; Race = White, Other; Ownership = Non Profit;
 Bedsize = less than 500; Region = Midwest, South,
 West; Sex = All; Age = All                        0.002902625    478.86519

 Payment = Workmen's Compensation                  0.001390675    826.82116

 Payment = Not Stated; Other Government;
 No Charge, Other; Race = Not Stated;
 Ownership = Proprietary, Goverment                0.005325008    651.02985

 Bedsize = 500+                                    0.004315214    394.87132

 Region = Northeast                                0.002503409    295.28084

 Days of Care
 Totals; Race = All; Ownership = All; Sex = All;
 Region = Northeast, South; Age = 15+;
 Payment = Medicaid, Other Goverment, Private,
 Self, No Charge, Other; Bedsize = 300+            0.004364047    1408.24667

 Payment = Workmen's Compensation, Not Stated      0.04714936     1773.32961

 Payment = Medicare                                0.0278040      2855.34521

 Age = Less than 15; Region = Midwest, West;
 Bedsize = Less than 300                           0.01687698     1384.83695

 Procedures
 Totals; Payment = Medicare, Medicaid, Private,
 Self; Ownership = Non-Profit;
 Race = White, Other; Region = Northeast,
 South; Sex = All; Age = 15+                       0.004374039    451.10229

 Payment = Workmen's Compensation                  0.002159305    1131.37891

 Payment = Not Stated; Other Government;
 No Charge, Other; Ownership = Proprietary,
 Government; Race = Not Stated                     0.01859851     631.71403

 Region = Midwest, West; Age = Less than 15;
 Bedsize = All                                     0.01711983     453.98054


 1/ Relative standard error(X) = RSE(x) = square root ( a + b/X ) * 100

 For example, in 1989 the number of discharges from short-stay hospitals for
 females with a first-listed diagnosis of atherosclerotic heart disease (ICD-
 9-CM code 414.0) was 134,000.  Using the applicable constants from Table 1
 for estimates by sex produces:

  RSE(125,000) = square root of (.002902625 + 478.86519 / 125,000) * 100

  RSE(125,000) = 8.21%

  The relative standard error for the estimate of interest is 8.21 percent.
  From this the standard error is obtained by multiplying the relative
  standard error by the estimate:

       125,000 * 8.21% = 10,263

  The standard error can be employed to generate confidence intervals or for
  statistical testing.  In this example, the 68% confidence interval for the
  estimate of female inpatients with a first-listed diagnosis of
  atherosclerotic heart disease is:

       (125,000 - 10,263) <-> (125,000 + 10,263)

       114,737 <-> 135,263

Parameter Values for Relative Standard Errors, 1990

 Table I Parameter values for relative standard errors /l for National
 Hospital Discharge Survey aggregate statistics by statistic type:  United
 States, 1990

                                 FIRST- LISTED DIAGNOSES

                          Constant a                 Constant b

 Overall                  0.00213274                 228.83436

 Race
    White                 0.00212480                 298.56389
    Black                 0.00536798                 264.99939
    Other                 0.02898870                 119.66112
    Not Stated            0.02252373                 226.20135


 Region
   Northeast              0.00274374                  56.26824
   Midwest                0.00487162                 183.53099
   South                  0.00374622                 343.89170
   West                   0.00564256                 318.91435



 Sex
    Male                  0.00152360                 313.07866
    Female                0.00124681                 311.63218



 Age
    <15                   0.01596667                  47.11560
    15-44                 0.00141521                 299.76229
    45-64                 0.00156516                 234.54268
    65+                   0.00161451                 263.22287


                                      DAYS OF CARE

                          Constant a                  Constant b

 Overall                  0.00357974                  452.58154

 Race
    White                 0.00329103                  599.59678
    Black                 0.00837988                  291.21887
    Other                 0.04484549                  150.12133
    Not Stated            0.02913755                  634.52913

 Region
    Northeast             0.00368158                  146.19498
    Midwest               0.00604784                  970.00120
    South                 0.00540049                  929.23150
    West                  0.01035658                  830.73994

 Sex
    Male                  0.00292604                  292.12692
    Female                0.00212793                  701.56421

 Age
    <15                   0.00223988                  140.76391
    15-44                 0.00300517                  460.08887
    45-64                 0.00920278                  432.97056
    65+                   0.00251490                  762.85374


 For example, in 1990 the number of discharges from short-stay hospitals
 for females with a first-listed diagnosis of atherosclerotic heart disease
 (ICD-9-CM code 414.0) was 133,000.  Using the applicable constants from
 Table I for estimates by sex produces:

     RSE(l33,000) = 100 * square root of (.00124681 + 311.63218 / 133,000)

     RSE(133,000) = 5.99%

 The relative standard error for the estimate of interest is 5.99 percent.
 From this the standard error is obtained by multiplying the relative
 standard error by the estimate:

          133,000  *  5.99% =  7,969

 The standard error can be employed to generate confidence intervals or for
 Statistical testing.  In this example, the 68% confidence interval for the
 estimate of female inpatients with a first-listed diagnosis of
 atherosclerotic heart disease is:

       (133,000 - 7,969) <-> (133,000 + 7,969)

       125,031 <-> 140,969

Presentation of Estimates

 Publication of estimates for the NHDS is based on the relative standard error
 of the estimate and the number of sample records on which the estimate is
 based (referred to as the sample size).  Estimates are not presented in NCHS
 reports unless a reasonable assumption regarding the probability distribution
 of the sampling error is possible.

 Based on consideration of the complex sample design of the NHDS, the follow-
 ing guidelines are used for presenting the NHDS estimates:

     If the sample size is less than 30, the value of the estimate is not
     reported.

     If the sample size is 30-59, the value of the estimate is reported but
     should not be assumed reliable.

     If the sample size is 60 or more but the relative standard error is over
     30 percent, the estimate is reported but

     If the sample size is 60 or more but the relative standard error is over
     30 percent, the estimate is reported but should not be assumed reliable.

How to Use the Data Tape

 The NHDS records are weighted to allow inflation to national or regional
 estimates.  The weight applied to each record is found in tape location
 111-115.  To produce an estimate of the number of discharges, the weights for
 the desired records must be summed. To produce an estimate for number of days
 of care, the weight must be multiplied by the length of stay (tape location
 101-104) and these products are summed.  Length of stay data can be obtained
 by using recodes already on the tape (see items 16 and 23 or items 14 and 18
 in the tape layout), or by dividing days of care by number of discharges as
 calculated above.

 Appendix E contains unweighted and weighted frequencies for selected descrip-
 tive variables on the data tape.  These may be used as a cross-check when
 processing the data on the user's system.

Monthly and Seasonal Estimates Under the New Design (1990)

 An important difference between the old and new designs is the method used
 for adjusting weights for sampled cases from responding hospitals for
 individual months.  In the old design, weights for responding hospitals
 were adjusted monthly to account for nonresponse.  In the new design, this
 approach is maintained to account for hospitals which do not respond for
 the year.  However, for partially responding hospitals (submitting between
 6 through 11 months of data), weights are adjusted for the responding
 months to produce annual estimates.

 A result of this adjustment is that monthly and seasonal estimates from
 the NHDS are not strictly valid, but the effect is believed to be small.
 In the 1990 NHDS, 86 percent of the 474 responding hospitals provided data
 for all twelve months, and 94 percent provided at least 9 months of data.

Diagnosis-Related Groups (DRGs)

 Many users of the NHDS data tapes have expressed an interest in converting
 the data to DRGs.  This has been done using DRG Grouper Programs obtained
 from the Health Care Financing Administration.  The DRGs and the DRG Grouper
 Programs were developed outside of the National Center for Health Statistics;
 any questions about DRGs, other than specific questions about how they
 relate to NHDS data, should be addressed elsewhere.

Questions

 Questions concerning data on the tape should be directed to Maria Owings,
 Ph.D., Hospital Care Statistics Branch, Division of Health Care Statistics,
 National Center for Health Statistics, Presidential Building, Room 956, 6525
 Belcrest Road, Hyattsville, Maryland  20782, (301) 436-7125.

RECORD LAYOUT
 General Information

  NATIONAL HOSPITAL DISCHARGE SURVEY - 1988-89 OUTLINE OF THE ITEMS AND CODES
             ARRANGED BY LOCATION IN THE FINAL MEDICAL TAPE RECORD

 This section consists of a detailed breakdown of each tape record, providing
 a brief description of each item of data included in the records.  The data
 are arranged sequentially according to their physical location on the tape
 record.  Unless otherwise stated in the Item Description, the data are
 derived from the abstract form.  The SMG Hospital Market Tape and the hospi-
 tal interview are alternate sources of data, while the computer generates
 other items.

 1-2 Blank
 3 Discharge Status Recode

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  1          3          1        Discharge Status Recode

                                 1:  Alive
                                 2:  Dead
                                 3:  Not State
 4-29 Blank
 30-33 Age

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  2       30-33         4        Age

                                 Units               Number
                                 (Location 33)       (Location 30-32)

                                 1:  Years           001-124
                                 2:  Months          001-011
                                 3:  Days            000-031
 34 Sex

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  3          34         1        Sex

                                 1:  Male
                                 2:  Female
 35 Blank
 36 Marital Status

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  4          36        1         Marital Status

                                 1:  Married
                                 2:  Single
                                 3:  Widowed
                                 4:  Divorced
                                 5:  Separated
                                 6:  Not Stated
                                 7:  Unknown
 37-41 Date of Admission

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  5       37-41        5         Date of Admission

  5.1     37-38        2         Month of Admission

                                 01:  January through
                                 12:  December

  5.2     39-40        2         Day of Admission

                                 01-31
  5.3        41        1         Year of Admission

                                 7:  1987
                                 8:  1988
 42-46 Date of Discharge

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  6       42-46        5         Date of Discharge

  6.1     42-43        2         Month of Discharge

                                 01:  January through
                                 12:  December

  6.2     44-45        2         Day of Discharge

                                 01-31

  6.3        46        1         Year of Discharge

                                 8:  1988
 47 Discharge Status

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  7          47        1         Discharge Status

                                 1:  Routine Discharge/Discharged Home
                                 2:  Left Against Medical Advice
                                 3:  Discharged/Transferred to Another
                                     Short-Term Hospital
                                 4:  Discharged/Transferred to Long-Term
                                     Care Institution
                                 5:  Alive, Disposition Not Stated
                                 6:  Dead
                                 7:  Status Not Stated
                                 9:  1989
 48 Blank
 49 Age Recode
  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  8          49         1        Age Recode

                                 1:  Less than 15 Years
                                 2:  15-44 Years
                                 3:  45-64 Years
                                 4:  65 Years and Over
 50 Number of Diagnostic Codes Recorded

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

  9          50         1        Number of Diagnostic Codes Recorded

                                 1 - Minimum
                                 7 - Maximum
 51 Number of Surgical Codes Recorded

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 10          51         1        Number of Surgical Codes Recorded

                                 0 - Minimum
                                 4 - Maximum
 52-56 Date of Surgery #3

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 11       52-56         5        Date of Surgery #3

 11.1     53-53         2        Month of Surgery

                                 01-12

 11.2     54-55         2        Day of Surgery

                                 01-31

 11.3        56         1        Year of Surgery

                                 7:  1987
                                 8:  1988
                                 9:  1989
 57-61 Date of Surgery #4

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 12       57-61         5        Date of Surgery #4

                                 Same format as above (52-56)
 62-77 Blank
 78-81 Length of Stay in Days

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 13       78-81         4        Length of Stay in Days

                                 This item was generated in the computer on
                                 the basis of date of admission and date of
                                 discharge.

 82-83 Length of Stay Recode #1 (Computer Generated)

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 14       82-83         2        Length of Stay Recode #1 (Computer Generated)

                                 00:  00 Days
                                 01:  01 Days
                                 .       .
                                 .       .
                                 .       .
                                 31:  31 Days and Over
 84-85 Age Recode (Computer Generated)

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 15       84-85         2        Age Recode (Computer Generated)

                                 00:  Newborn
                                 01:  Under 1 Year
                                 02:  01-04 Years
                                 03:  05-14 Years
                                 04:  15-24 Years
                                 05:  25-34 Years
                                 06:  35-44 Years
                                 07:  45-54 Years
                                 08:  55-64 Years
                                 09:  65-74 Years
                                 10:  75 Years and Over
 86 Race

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

             86         1        Race

                                 1:  White
                                 2:  Black
                                 3:  American Indian/Eskimo/Aleut
                                 4:  Asian/Pacific Islander
                                 5:  Other
                                 6:  Not Stated

 87 Marital Status Recode (Computer Generated)

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 17          87         1        Marital Status Recode (Computer Generated)

                                 1:  Married
                                 2:  Not Married
                                 3:  Not Stated
 88 Length of Stay Recode #2 (Computer Generated)

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 18          88         1        Length of Stay Recode #2 (Computer Generated)

                                 1:  00-07 Days
                                 2:  08-14 Days
                                 3:  15-21 Days
                                 4:  22-28 Days
                                 5:  29 Days and Over
 89-90 Blank
 91 Geographic Region

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 19          91         1        Geographic Region

                                 1:  Northeast
                                 2:  Midwest
                                 3:  South
                                 4:  West
 92-98 Blank
 99 Number of Beds Recode (Interview)

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 20          99         1        Number of Beds Recode (Interview)

                                 1:  6-99 Beds
                                 2:  100-199 Beds
                                 3:  200-299 Beds
                                 4:  300-499 Beds
                                 5:  500 Beds or more
 100 Hospital Ownership (Interview)

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 21         100         1        Hospital Ownership (Interview)

                                 1:  Proprietary
                                 2:  Government
                                 3:  Not for profit
 101-104 Length of Stay in Days

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 22       101-104       4        Length of Stay in Days

                                 Data in 78-81 has been transferred to this
                                 data field with 0000 days recoded to 0001.

 105-110 Blank
 111-115 Weight

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 23       111-115       5        Weight

                                 Final Adjusted Weight (whole number)
 116-130 Blank
 131-136 Expected Source(s) of Payment

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 24       131-136       6        Expected Source(s) of Payment

 24.1         131       1        Principal
 24.2         132       1        Other
 24.3         133       1        Other
 24.4         134       1        Other
 24.5         135       1        Other
 24.6         136       1        Other

                                 Code  Source of Payment

                                 1:  Worker's Compensation
                                 2:  Medicare
                                 3:  Medicaid
                                 4:  Not Stated
                                 5:  Other Government Payment
                                 6:  Blue Cross
                                 7:  Other Private/Commercial Insurance
                                 8:  Self-Pay
                                 9:  No Charge
                                 0:  Other
 137-141 Date of Surgery #1

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 25       137-141       5        Date of Surgery #1

                                 Same format as above (52-56)
 142-146 Date of Surgery #2

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 26       142-146       5        Date of Surgery #2

                                 Same format as above (52-56)
 147-148 Blank
 149-183 Diagnostic Codes

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 27       149-183      35        Diagnostic Codes** (Five-Digit Codes)

 27.1     149-153       5        Diagnosis No. 1
 27.2     154-158       5        Diagnosis No. 2
 27.3     159-163       5        Diagnosis No. 3
 27.4     164-168       5        Diagnosis No. 4
 27.5     169-173       5        Diagnosis No. 5
 27.6     174-178       5        Diagnosis No. 6
 27.7     179-183       5        Diagnosis No. 7
 _____________________________________________________________________________

 **Codes are in compliance with the ICD-9-CM.  There is an implied decimal
 between positions 3 and 4 for each diagnostic code, (with the exception of
 E-codes, where the implied decimal is between 4 and 5) and between positions
 2 and 3 for each surgical code.

 184-199 Surgical Codes

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 28       184-199      16        Surgical Codes ** (Four-Digit Codes)

 28.1     184-187       4        Surgery No. 1
 28.2     188-191       4        Surgery No. 2
 28.3     192-195       4        Surgery No. 3
 28.4     196-199       4        Surgery No. 4
 _____________________________________________________________________________

 **Codes are in compliance with the ICD-9-CM.  There is an implied decimal
 between positions 3 and 4 for each diagnostic code, (with the exception of
 E-codes, where the implied decimal is between 4 and 5) and between positions
 2 and 3 for each surgical code.

 200 Blank
 201-203 DRGs 1-470

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 29       201-203       3        DRGs 1-470, Grouper 2.0, Federal Register
                                 Thursday, September 1, 1983
 204-206 DRGs 1-471

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 30       204-206       3        DRGs 1-471, Grouper 3.0, Federal Register
                                 Tuesday, September 3, 1985
 207-209 DRGs 1-473

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 31       207-209       3        DRGs 1-473, Grouper, 4.0, Federal Register
                                 Wednesday, September 3, 1986
 210-212 DRGs 1-475

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 32       210-212       3        DRGs 1-475, Grouper, 50.0, Federal Register
                                 Tuesday, September 1, 1987
 213-215 DRGs 1-477

  Item      Tape     Number of
 Number   Location   Positions   Item Description and Codes

 33       213-215       3        DRGs 1-477, Grouper 6.0, Federal Register
                                 Friday, September 30, 1988

TABLES ON CIVILIAN POPULATION
 Civilian Pop'n. by Sex, Age, & Geographic Region: U.S., 1988

           Civilian Population* by Sex, Age, and Geographic Region:
                          United States, July 1, 1988

              (Population estimates consistent with Series P-25,
            Current Population Reports, U.S. Bureau of the Census)

 *The NHDS used the civilian noninstitutionalized population to calculate
 hospital utilization rates from 1965 through 1980.  Beginning in 1981, the
 civilian resident population has been used to calculate rates.  If you have
 purchased NHDS tapes for years before 1981 and calculated rates using the
 civilian noninstitutionalized population provided in the documentation, these
 rates will have to be adjusted to be comparable to 1985 rates using the
 civilian resident population.
 _____________________________________________________________________________
 Age, geographic region,
 and race                        Both Sexes          Male        Female

      All ages                      Population in thousands

 Total                              244,125       118,223       125,902

 Region:
    Northeast                        50,478        24,133        26,345
    Midwest                          59,739        29,022        30,716
    South                            83,791        40,378        43,413
    West                             50,118        24,690        25,428

 Race:
    White                           206,082       100,207       105,875
    All other                        38,043        18,016        20,027

      Under 15 years

 Total                               53,111        27,196        25,913

 Under 1 year                         3,859         1,976         1,883
 1-4 years                           14,596         7,470         7,126
 5-14 years                          24,655        17,750        16,904

 Region:
    Northeast                         9,946         5,093         4,852
    Midwest                          12,943         6,635         6,307
    South                            18,650         9,543         9,106
    West                             11,572         5,925         5,647

 Race:
    White                            42,728        21,926        20,801
    All other                        10,383         5,271         5,112

      15-44 years

 Total                              114,694        56,670        58,026

 15-24 years                         36,689        18,262        18,427
 25-34 years                         43,026        21,280        21,747
 35-44 years                         34,979        17,128        17,852

 Region:
    Northeast                        23,375        11,451        11,924
    Midwest                          27,972        13,913        14,059
    South                            39,138        19,195        19,943
    West                             24,210        12,110        12,100

 Race:
    White                            96,096        47,884        48,212
    All other                        18,598         8,785         9,813

      45-64 years

 Total                               45,953        22,004        23,948

 45-54 years                         24,125        11,714        12,410
 55-64 years                         21,828        10,290        11,538

 Region:
    Northeast                        10,292         4,877         5,413
    Midwest                          11,212         5,413         5,800
    South                            15,628         7,408         8,219
    West                              8,823         4,307         4,516

 Race:
    White                            39,959        19,294        20,663
    All other                         5,995         2,710         3,285

      65 years and over

 Total                               30,367        12,353        18,014

 65-74 years                         17,897         7,945         9,953
 75-84 years                          9,521         3,584         5,937
 85 years and over                    2,948           825         2,124

 Region:
    Northeast                         6,867         2,712         4,155
    Midwest                           7,612         3,063         4,549
    South                            10,374         4,230         6,144
    West                              5,513         2,347         3,165

 Race:
    White                            27,300         11,103       16,198
    All other                         3,067          1,251        1,816

Civilian Pop'n. by Sex, Age, Geographic Region, & Race: U.S., 1989

       Civilian Population* by Sex, Age, and Geographic Region and Race:
                          United States, July 1, 1989

              (Population estimates consistent with Series P-25,
            Current Population Reports, U.S. Bureau of the Census)

 *The NHDS used the civilian noninstitutionalized population to calculate
 hospital utilization rates from 1965 through 1980.  Beginning in 1981, the
 civilian resident population has been used to calculate rates.  If you have
 purchased NHDS tapes for years before 1981 and calculated rates using the
 civilian noninstitutionalized population provided in the documentation, these
 rates will have to be adjusted to be comparable to 1985 rates using the
 civilian resident population.
 _____________________________________________________________________________
 Age, geographic
 region, and race             Both Sexes         Male            Female

     All ages                           Population in thousands

 Total                          246,552          119,467          127,084

 Region:
   Northeast                     50,658           24,235           26,422
   Midwest                       60,007           29,169           30,839
   South                         84,653           40,808           43,845
   West                          51,234           25,256           25,978

 Race:
   White                        207,667          101,045          106,622
   All other                     38,884           18,422           20,462

       Under 15 years

 Total                           53,914           27,608           26,306

 Under 1 year                     3,945            2,020            1,925
 1-4 years                       14,807            7,578            7,230
 5-14 years                      35,162           18,010           17,151

 Region:
   Northeast                     10,098            5,171            4,926
   Midwest                       13,041            6,686            6,356
   South                         18,842            9,642            9,201
   West                          11,932            6,110            5,823

 Race:
   White                         43,252           22,193           21,060
   All other                     10,661            5,415            5,246

       15-44 years

 Total                          115,203           56,949           58,251

 15-24 years                     35,809           17,829           17,980
 25-34 years                     43,177           21,362           21,814
 35-44 years                     36,217           17,758           18,457

 Region:
   Northeast                     23,302           11,420           11,882
   Midwest                       27,961           13,914           14,048
   South                         39,342           19,305           20,037
   West                          24,597           12,313           12,287

 Race:
   White                         96,287           48,012           48,275
   All other                     18,915            8,940            9,977

       45-64 years

 Total                           46,451           22,272           24,178

 45-54 years                     24,859           12,074           12,785
 55-64 years                     21,592           10,198           11,393

 Region:
   Northeast                     10,319            4,898            5,421
   Midwest                       11,264            5,444            5,820
   South                         15,828            7,513            8,316
   West                           9,040            4,419            4,622

 Race:
   White                         40,306           19,494           20,813
   All other                      6,145            2,779            3,367

       65 years and over

 Total                           30,984           12,636          18,348

 65-74 years                     18,182            8,095          10,087
 75-84 years                      9,761            3,691           6,070
 85 years and over                3,042              850           2,192

 Region:
   Northeast                      6,941            2,748           4,193
   Midwest                        7,740            3,125           4,615
   South                         10,640            4,347           6,293
   West                           5,663            2,416           3,247

 Race:
   White                         27,822           11,347          16,475
   All other                      3,162            1,289           1,873

Estimates of Civilian Population, Census-Level: U.S., 1988
All Classes and White

      ESTIMATES OF THE CIVILIAN RESIDENT POPULATION OF THE UNITED STATES:
                                 JULY 1, 1988
                                 CENSUS-LEVEL

                         ALL CLASSES                        WHITE
                  TOTAL     MALE      FEMALE      TOTAL     MALE      FEMALE

 ALL AGES         244125    118223    125902      206082    100207    105875

  0-4              18456      9446      9009       14879      7630      7249
   0                3859      1976      1883        3116      1599      1517
   1                3668      1880      1788        2960      1520      1440
   2                3646      1865      1781        2937      1505      1432
   3                3678      1881      1797        2967      1521      1447
   4                3604      1844      1760        2899      1486      1413

  5-9              18028      9226      8802       14503      7440      7063
   5                3671      1878      1792        2952      1514      1438
   6                3660      1872      1788        2950      1512      1438
   7                3685      1887      1799        2972      1525      1447
   8                3516      1800      1716        1826      1451      1375
   9                3495      1788      1707        2801      1437      1364

 10-14             16627      8525      8102       13346      6856      6489
  10                3451      1770      1681        2772      1425      1347
  11                3389      1738      1651        2720      1397      1323
  12                3233      1656      1577        2597      1334      1263
  13                3306      1695      1611        2657      1364      1293
  14                3248      1666      1582        2601      1337      1264

 15-19             18066      9156      8909       14624      7420      7204
  15                3354      1717      1637        2677      1373      1305
  16                3541      1812      1729        2841      1455      1386
  17                3836      1970      1866        3105      1596      1509
  18                3670      1850      1819        3005      1517      1488
  19                3665      1806      1859        2996      1479      1517

 20-24             18623      9106      9518       15375      7564      7811
  20                3538      1730      1808        2897      1422      1475
  21                3534      1721      1813        2910      1424      1487
  22                3622      1769      1853        2980      1464      1516
  23                3851      1880      1971        3191      1569      1622
  24                4079      2006      2073        3397      1685      1712

 25-29             21483     10604     10879       17996      8970      9026
  25                4183      2058      2125        3493      1733      1760
  26                4239      2089      2150        3552      1767      1784
  27                4385      2163      2222        3676      1831      1845
  28                4166      2057      2109        3495      1744      1751
  29                4510      2238      2272        3780      1895      1885

 30-34             21543     10675     10868       18133      9084      9050
   30               4501      2235      2266        3779      1896      1883
   31               4396      2178      2218        3698      1853      1845
   32               4277      2118      2160        3594      1799      1795
   33               4167      2061      2106        3510      1756      1755
   34               4202      2083      2119        3553      1781      1772

 35-39             18956      9310      9646       16110      8010      8100
   35               4033      1992      2041        3419      1709      1711
   36               3868      1904      1965        3291      1641      1649
   37               3786      1854      1932        3199      1587      1613
   38               3560      1742      1818        3038      1506      1532
   39               3709      1817      1892        3163      1567      1595

 40-44             16023      7818      8205       13857      6836      7021
   40               3691      1804      1887        3170      1567      1603
   41               3810      1866      1944        3341      1654      1687
   42               2779      1353      1426        2393      1179      1215
   43               2851      1386      1464        2453      1207      1247
   44               2892      1409      1484        2499      1229      1270

 45-49             12955      6328      6667       11213      5517      5696
   45               2990      1459      1531        2595      1278      1317
   46               2698      1310      1388        2327      1144      1183
   47               2577      1251      1326        2211      1084      1126
   48               2331      1138      1193        2014       993      1021
   49               2399      1170      1229        2066      1017      1049

 50-54             11129      5386      5743        9595      4691      4903
   50               2377      1147      1230        2038       993      1045
   51               2205      1070      1136        1902       932       970
   52               2187      1058      1130        1882       920       962
   53               2206      1073      1133        1916       942       974
   54               2154      1039      1115        1856       904       952

 55-59             10895      5194      5701        9494      4561      4932
   55               2100      1005      1095        1810       875       935
   56               2135      1021      1114        1857       896       961
   57               2247      1071      1175        1959       941      1018
   58               2192      1047      1145        1919       923       996
   59               2221      1049      1172        1949       926      1022

 60-64             10933      5096      5837        9657      4525      5132
   60               2281      1075      1206        1993       945      1047
   61               2211      1034      1177        1950       916      1034
   62               2100       974      1126        1850       863       987
   63               2162      1006      1156        1923       900      1023
   64               2179      1007      1173        1942       901      1041

 65-69              9993      4544      5449        8889      4059      4829
   65               2121       974      1147        1872       864      1009
   66               2113       970      1143        1887       871      1017
   67               2045       936      1110        1822       837       984
   68               1895       858      1037        1697       771       926
   39               1819       807      1013        1611       717       894

 70-74              7904      3400      4504        7104      3065      4038
   70               1755       778       977        1572       699       873
   71               1656       721       935        1492       651       841
   72               1572       678       894        1412       611       801
   73               1479       624       854        1333       566       768
   74               1444       599       845        1294       538       756

 75-79              5903      2322      3581        5318      2091      3227
   75               1355       555       801        1218       500       719
   76               1271       508       763        1143       457       686
   77               1182       462       720        1064       415       649
   78               1092       418       673         985       377       608
   79               1002       379       623         907       342       565

 80-84              3619      1262      2357        3311      1149      2162
   80                896       327       569         811       294       516
   81                792       280       512         729       256       473
   82                698       244       455         642       223       419
   83                648       220       428         596       201       395
   84                583       191       392         534       174       360

 85-89              1908       572      1336        1743       516      1226
   85                499       158       341         455       143       312
   86                436       133       302         398       121       277
   87                378       112       266         345       101       244
   88                323        93       231         296        84       212
   89                272        75       197         249        68       181

 90-94               769       191       578         700       171       529
   90                225        59       166         206        53       152
   91                182        45       137         166        41       126
   92                144        34       111         132        30       102
   93                121        29        91         109        26        83
   94                 97        23        73          87        21        66

 95-99               218        50       167         191        43       148
   95                 74        17        56          66        15        51
   96                 55        13        42          48        11        37
   97                 39         9        30          34         7        27
   98                 28         6        22          24         5        19
   99                 22         5        17          19         4        14

  100+                54        12        43          46         9        37

  1-4              14597      7470      7126       11763      6031      5732
  5-13             31406     16084     15322       25248     12959     12288
 14-17             13979      7166      6813       11224      5760      5464
 18-24             25958     12762     13196       21377     10561     10816
 18-21             14407      7108      7299       11809      5842      5967
 22-24             11551      5655      5897        9568      4718      4849
 15-44            114694     56669     58026       96096     47884     48212

   14+            194263     92693    101570        3311     79618     86337
   16+            187661     89309     98351         811     76909     83769
   18+            180284     85527     94757         729     73858     80874
   21+            169411     80140     89271         642     69440     76394
   62+             36808     15340     21468         596     13766     19249
   65+             30367     12353     18014         534     11103     16198
   85+              2948       825      2124        2679       739      1940

 MEDIAN AGE         32.5      31.4      33.6        33.4      32.3      34.5

Black & Other and Black

      ESTIMATES OF THE CIVILIAN RESIDENT POPULATION OF THE UNITED STATES:
                                 JULY 1, 1988
                                 CENSUS-LEVEL

                       BLACK AND OTHER                      BLACK
                  TOTAL     MALE      FEMALE      TOTAL     MALE      FEMALE

 ALL AGES         38043     18106      20027      29894     14064     15830

  0-4              3577      1816       1760       2802      1423      1379
   0                744       377        366        593       300       293
   1                709       360        348        561       284       276
   2                709       360        349        552       281       272
   3                711       360        350        550       280       270
   4                705       358        347        546       278       268

  5-9              3525      1786       1739       2783      1412      1371
   5                718       365        354        559       284       275
   6                710       360        350        558       283       275
   7                713       362        351        563       286       277
   8                690       349        341        551       279       272
   9                693       350        343        552       280       273

 10-14             3281      1669       1613       2613      1327      1285
  10                680       345        334        544       277       268
  11                669       341        328        537       274       263
  12                636       322        314        504       255       249
  13                649       331        318        515       262       253
  14                648       329        318        512       260       252

 15-19             3441      1736       1705       2762      1384      1378
  15                677       345        332        539       274       266
  16                700       357        343        562       285       276
  17                731       374        357        594       302       291
  18                665       333        332        533       265       268
  19                669       327        342        535       258       277

 20-24             3248      1542       1706       2596      1215      1382
  20                641       308        333        512       243       270
  21                623       297        326        499       234       265
  22                641       305        337        514       240       273
  23                660       310        350        528       245       283
  24                682       321        361        543       253       291

 25-29             3487      1634       1853       2750      1278      1472
  25                690       325        365        547       255       292
  26                687       321        366        544       253       292
  27                709       332        377        559       259       300
  28                671       313        358        526       243       283
  29                730       344        386        574       268       306

 30-34             3410      1519       1819       2627      1214      1413
   30               722       339        383        561       262       300
   31               698       326        373        538       248       290
   32               683       319        364        526       243       283
   33               657       305        352        499       230       270
   34               649       302        347        503       232       271

 35-39             2846      1300       1546       2156       974      1182
   35               613       283        330        469       215       254
   36               578       263        315        437       196       241
   37               587       268        319        447       201       245
   38               523       236        286        391       175       216
   39               546       250        296        413       187       225

 40-44             2166       982       1184       1613       725       888
   40               520       236        284        390       176       214
   41               469       212        256        350       158       192
   42               386       174        212        283       126       157
   43               397       180        218        294       131       162
   44               394       179        214        296       133       162

 45-49             1782       811        971       1359       608       751
   45               395       181        214        300       136       164
   46               371       166        205        284       125       159
   47               367       167        200        280       125       155
   48               326       144        332        533       265       268
   49               334       153        181        255       115       140

 50-54             1535       695        840       1194       533       661
   50               340       154        185        263       117       146
   51               303       137        166        233       103       130
   52               305       138        167        237       105       132
   53               290       131        159        226       101       125
   54               297       135        163        234       106       128

 55-59             1402       633        769       1115       507       608
   55               290       131        159        229       103       125
   56               279       125        153        221       100       121
   57               288       130        158        230       105       126
   58               273       124        149        217        99       118
   59               273       123        150        218        99       118

 60-64              1276       571       705        1024       426       562
   60                288       130       158         233       106       127
   61                261       117       144         210        96       115
   62                250       112       139         200        90       110
   63                239       106       133         191        85       106
   64                237       106       132         190        85       105

 65-69              1104       485       619         895       391       503
   65                248       110       138         201        90       112
   66                226       100       126         183        80       102
   67                224        98       125         181        79       102
   68                198        87       111         159        69        90
   39                209        90       118         171        73        98

 70-74               801       335       466         652       269       383
   70                183        79       104         150        64        86
   71                163        69        94         132        56        76
   72                160        67        93         130        54        76
   73                145        59        87         118        47        71
   74                149        61        89         122        49        73

 75-79               585       232       353         476       183       293
   75                137        55        82         112        44        68
   76                128        51        77         104        41        64
   77                118        47        71          96        37        59
   78                107        42        65          87        33        54
   79                 95        37        58          77        29        48

 80-84               308       113       194         250        89       161
   80                 86        33        53          70        26        44
   81                 63        24        39          50        18        32
   82                 57        21        36          46        16        29
   83                 53        19        34          43        15        28
   84                 50        17        33          41        14        27

 85-89               165        55       110         138        44        94
   85                 44        15        28          36        12        24
   86                 38        13        25          32        10        21
   87                 33        11        22          27         9        19
   88                 28         9        19          23         7        16
   89                 23         7        16          20         6        14

 90-94                69        20        48          60        17        43
   90                 19         6        13          16         5        12
   91                 16         5        11          14         4        10
   92                 13         4         9          11         3         8
   93                 11         3         8          10         3         7
   94                 10         3         7           9         3         6

 95-99                27         8        19          23         6        17
   95                  8         2         6           7         2         5
   96                  6         2         5           6         1         4
   97                  5         1         4           4         1         3
   98                  4         1         3           3         1         2
   99                  3         1         2           3         1         2

  100+                 8         2         6           7         2         5

  1-4               2833      1439      1394        2209      1123      1086
  5-13              6159      3125      3034        4883      2479      2404
 14-17              2755      1406      1349        2207      1122      1085
 18-24              4582      2202      2380        3664      1737      1926
 18-21              2598      1266      1333        2079      1000      1079
 22-24              1983       936      1047        1585       738       847
 15-44             18598      8785      9813       14505      6789      7715

   14+             28307     13075     15233       22209     10162     12047
   16+             26983     12400     14583       21157      9628     11529
   18+             25552     11669     13883       20002      9040     10962
   21+             23577     10701     12877       18422      8274     10147
   62+              3793      1574      2219        3082      1263      1819
   65+              3067      1251      1816        2501      1003      1498
   85+               269        86       183         2229       70       158

 MEDIAN AGE         27.8      26.4      29.0        27.5      26.1      28.8

Estimates of Civilian Population, Census-Level: U.S., 1989
All Classes and White

      ESTIMATES OF THE CIVILIAN RESIDENT POPULATION OF THE UNITED STATES:
                                 JULY 1, 1989

               ALL CLASSES                        WHITE
          TOTAL   MALE    FEMALE          TOTAL   MALE    FEMALE

 ALL AGES 246552  119467  127084          207667  101045  106622

  0-4      18752    9598    9155           15050    7716    7335
   0        3945    2020    1925            3163    1623    1541
   1        3717    1904    1813            2983    1530    1453
   2        3660    1872    1788            2931    1501    1429
   3        3710    1898    1812            2983    1528    1455
   4        3721    1904    1816            2989    1533    1457

  5-9      18212    9321    8891           14628    7504    7124
   5        3605    1844    1761            2895    1484    1411
   6        3678    1883    1795            2959    1518    1441
   7        3733    1910    1822            3000    1539    1462
   8        3573    1831    1742            2874    1476    1398
   9        3624    1853    1770            2900    1487    1412

 10-14     16950    8689    8260           13574    6973    6601
  10        3563    1826    1737            2846    1462    1384
  11        3418    1751    1667            2740    1406    1334
  12        3384    1735    1649            2712    1394    1318
  13        3257    1668    1589            2608    1338    1270
  14        3327    1708    1619            2668    1372    1296

 15-19     17665    8959    8706           14229    7224    7006
  15        3278    1681    1598            2619    1344    1275
  16        3355    1718    1637            2672    1369    1303
  17        3532    1812    1720            2829    1453    1376
  18        3745    1891    1853            3031    1533    1498
  19        3755    1857    1898            3079    1525    1554

 20-24     18144    8870    9274           14935    7347    7588
  20        3611    1769    1843            2957    1453    1504
  21        3461    1689    1773            2841    1393    1448
  22        3518    1715    1803            2899    1422    1477
  23        3642    1779    1863            3001    1477    1524
  24        3911    1919    1993            3237    1601    1635

 25-29     21301   10515   10786           17803    8874    8929
  25        4120    2029    2091            3429    1704    1725
  26        4167    2053    2114            3480    1731    1748
  27        4295    2117    2178            3588    1785    1802
  28        4228    2086    2141            3545    1768    1778
  29        4492    2229    2262            3761    1886    1875


 30-34     21876   10847   11028           18373    9210    9163
   30       4495    2228    2266            3755    1881    1874
   31       4410    2186    2224            3710    1859    1851
   32       4438    2202    2236            3729    1870    1859
   33       4234    2094    2140            3556    1778    1778
   34       4299    2137    2162            3623    1822    1802

 35-39     19437    9562    9874           16482    8210    8272
   35       4148    2051    2097            3504    1753    1751
   36       3981    1961    2020            3378    1685    1694
   37       3885    1909    1976            3295    1640    1655
   38       3700    1812    1887            3149    1563    1586
   39       3723    1829    1893            3156    1570    1586

 40-44     16780    8196    8583           14465    7147    7317
   40       3725    1822    1903            3171    1570    1602
   41       3552    1738    1814            3065    1517    1548
   42       3827    1876    1951            3352    1661    1691
   43       2806    1362    1443            2414    1186    1228
   44       2871    1398    1473            2462    1213    1249

 45-49     13491    6571    6919           11646    5732    5914
   45       2835    1380    1455            2437    1198    1239
   46       3058    1489    1569            2668    1315    1353
   47       2741    1332    1409            2353    1156    1198
   48       2435    1188    1247            2107    1039    1068
   49       2423    1182    1241            2080    1025    1055

 50-54     11368    5503    5866            9783    4785    4998
   50       2408    1162    1246            2061    1004    1057
   51       2310    1121    1189            1990     976    1014
   52       2207    1069    1139            1895     927     968
   53       2209    1072    1137            1907     936     971
   54       2234    1079    1155            1930     942     988

 55-59     10725    5119    5605            9309    4479    4830
   55       2102    1009    1092            1809     876     932
   56       2076     995    1081            1796     868     928
   57       2176    1039    1137            1886     908     978
   58       2163    1027    1135            1886     902     984
   59       2209    1049    1160            1933     925    1009

 60-64     10867    5079    5788            9568    4498    5071
   60       2229    1053    1176            1937     922    1015
   61       2235    1053    1182            1970     933    1036
   62       2114     984    1129            1858     870     988
   63       2103     978    1125            1859     870     989
   64       2187    1010    1176            1945     903    1042

 65-69     10170    4631    5538            9029    4130    4899
   65       2175    1001    1174            1921     888    1033
   66       2045     935    1111            1812     832     981
   67       2089     954    1135            1857     852    1005
   68       1987     905    1082            1781     815     966
   69       1874     837    1037            1657     743     914

 70-74      8012    3464    4549            7193    3120    4074
   70       1741     772     969            1552     690     862
   71       1708     751     956            1541     680     861
   72       1619     700     918            1457     632     824
   73       1487     632     855            1338     571     767
   74       1458     608     850            1306     546     760

 75-79      6033    2385    3648            5430    2147    3282
   75       1376     566     811            1237     510     727
   76       1297     521     776            1165     468     697
   77       1212     476     735            1089     428     661
   78       1120     432     688            1009     389     620
   79       1028     391     637             930     353     577

 80-84      3728    1306    2422            3409    1189    2220
   80        921     338     583             832     304     528
   81        815     290     526             750     265     485
   82        720     253     467             661     231     430
   83        669     228     441             614     208     406
   84        603     198     405             552     181     371

 85-89      1962     588    1374            1791     531    1260
   85        515     164     351             470     148     322
   86        448     137     311             408     124     285
   87        387     114     272             353     103     250
   88        332      95     237             303      86     217
   89        281      78     203             257      70     187

 90-94       790     195     594             719     174     544
   90        234      62     171             213      56     157
   91        190      48     142             174      43     130
   92        151      36     115             138      32     106
   93        117      26      91             107      23      84
   94         97      23      74              87      20      67

 95-99       229      53     176             200      46     155
   95         77      19      59              69      16      52
   96         58      14      44              51      12      39
   97         42      10      32              37       8      28
   98         30       7      23              25       5      10
   99         22       5      17              19       4      15

  100+        61      13      48              50      10      41

  1-4      14807    7578    7229           11887    6093    5794
  5-13     31834   16302   15532           25534   13105   12429
 14-17     13492    6919    6574           10788    5538    5249
 18-24     25644   12619   13025           21045   10405   10640
 18-21     14572    7206    7367           11908    5904    6004
 22-24     11072    5413    5659            9137    4501    4636
 15-44    115202   56950   58252           96287   48011   48275

   14+    195965   93568  102397          167083   80225   86858
   16+    189359   90179   99181          161796   77508   84288
   18+    182473   86649   95824          156296   74687   81609
   21+    171361   81132   90229          147229   70175   77053
   62+     37387   15609   21778           33484   13990   19494
   65+     30984   12636   18348           27822   11347   16475
   85+      3042     850    2192            2761     761    2000

 MEDIAN AGE 32.8    31.7    33.8            33.7    32.7    34.8

Black & Other and Black

      ESTIMATES OF THE CIVILIAN RESIDENT POPULATION OF THE UNITED STATES:
                                 JULY 1, 1989

              BLACK AND OTHER                      BLACK
           TOTAL   MALE    FEMALE          TOTAL   MALE    FEMALE

 ALL AGES  38884   18422   20462           30346   14281   16065

  0-4       3702    1882    1820            2890    1469    1421
   0         782     397     385             619     314     305
   1         734     373     360             577     293     284
   2         729     371     358             567     288     279
   3         727     369     357             561     286     275
   4         731     372     360             565     287     278

  5-9       3584    1817    1767            2802    1423    1378
   5         710     360     350             550     280     270
   6         719     365     354             558     284     274
   7         732     372     360             573     291     282
   8         699     354     345             549     279     270
   9         724     366     358             573     290     283

 10-14      3375    1716    1659            2679    1362    1318
  10         717     364     353             571     290     281
  11         678     345     333             540     275     265
  12         672     341     331             534     271     263
  13         649     330     319             513     260     253
  14         659     336     323             522     265     256

 15-19      3435    1735    1701            2730    1369    1361
  15         660     336     323             520     265     255
  16         683     349     334             542     276     267
  17         703     359     344             561     285     276
  18         714     358     355             573     285     288
  19         676     332     344             534     259     276

 20-24      3210    1524    1686            2542    1188    1354
  20         655     315     339             517     245     272
  21         620     296     324             490     230     260
  22         619     293     326             490     228     262
  23         641     302     339             510     237     273
  24         675     317     357             536     249     287

 25-29      3498    1642    1857            2748    1278    1470
  25         691     326     365             545     254     291
  26         687     322     365             542     252     290
  27         707     332     375             556     259     297
  28         682     318     364             533     247     287
  29         730     344     387             571     267     305

 30-34      3503    1638    1865            2692    1246    1446
   30        740     347     393             573     266     306
   31        700     327     373             536     248     288
   32        710     333     378             546     253     293
   33        678     316     362             514     237     277
   34        675     315     360             524     242     281

 35-39      2954    1352    1602            2229    1008    1221
   35        644     298     346             493     226     267
   36        603     276     327             452     204     248
   37        590     269     321             448     201     246
   38        551     249     301             411     183     228
   39        567     260     307             425     193     232

 40-44      2315    1049    1266            1715     771     944
   40        553     252     301             414     187     227
   41        487     221     266             360     163     198
   42        475     215     260             354     159     195
   43        392     176     215             285     127     158
   44        408     185     224             302     135     167

 45-49      1845     839    1006            1392     623     769
   45        397     182     215             297     135     163
   46        390     174     215             295     130     165
   47        387     177     211             295     132     162
   48        328     149     178             246     110     136
   49        343     157     186             259     117     143

 50-54      1586     718     868            1222     544     679
   50        347     158     190             267     119     148
   51        320     145     175             245     108     136
   52        312     142     171             240     106     133
   53        302     136     166             234     104     130
   54        304     137     167             237     106     131

 55-59      1416     641     775            1116     508     608
   55        293     133     160             228     104     125
   56        280     137     153             219     100     119
   57        290     131     159             230     105     126
   58        277     125     151             219     100     119
   59        276     124     151             219     100     119

 60-64      1298     581     718            1035     467     567
   60        292     131     160             234     107     127
   61        266     120     146             212      97     115
   62        256     114     142             203      92     111
   63        244     108     136             194      86     107
   64        242     107     134             192      86     106

 65-69      1141     502     639             916     402     515
   65        254     113     141             204      91     113
   66        233     103     130             187      82     104
   67        232     102     130             186      81     104
   68        206      90     115             164      71      93
   69        217      94     123             176      75     101

 70-74       819     344     475             661     274     386
   70        190      82     108             154      66      88
   71        167      71      96             134      57      77
   72        162      68      94             131      54      76
   73        149      61      88             120      48      71
   74        152      62      90             123      49      74

 75-79       603     238     365             486     187     299
   75        140      56      84             113      44      68
   76        132      52      79             106      41      65
   77        122      48      74              98      38      61
   78        111      43      68              89      34      55
   79         99      38      61              79      30      50

 80-84       319     117     201             256      91     165
   80         89      34      55              72      27      45
   81         65      24      41              51      18      33
   82         58      22      37              47      17      30
   83         54      19      35              44      15      29
   84         51      18      34              42      14      28

 85-89       171      57     114             142      45      97
   85         45      16      29              37      12      25
   86         39      13      26              32      10      22
   87         34      11      23              28       9      19
   88         29       9      20              24       7      17
   89         24       8      17              20       6      14

 90-94        71      21      50              61      17      43
   90         20       6      14              17       5      12
   91         17       5      12              14       4      10
   92         13       4       9              12       3       8
   93         11       3       8               9       2       7
   94         10       3       7               9       3       6

 95-99        29       8      21              25       7      18
   95          9       2       6               8       2       6
   96          7       2       5               6       2       5
   97          6       2       4               5       1       4
   98          4       1       3               4       1       3
   99          3       1       2               3       1       2

  100+        10       3       7               9       3       6

  1-4       2920    1485    1435            2271    1155    1116
  5-13      6300    3197    3103            4960    2520    2440
 14-17      2705    1380    1324            2144    1090    1054
 18-24      4599    2214    2386            3649    1732    1917
 18-21      2664    1301    1363            2114    1019    1095
 22-24      1935     913    1022            1536    1714     822
 15-44     18916    8939    9977           14657    6860    7796

   14+     28882   13343   15539           22497   10293   12204
   16+     27563   12670   14893           21456    9763   11693
   18+     26177   11962   14215           20353    9202   11150
   21+     24133   10957   13176           18729    8413   10316
   62+      3903    1619    2284            3143    1289    1854
   65+      3162    1289    1873            2555    1025    1529
   85+       281      89     192             236      72     165

 MEDIAN AGE 28.1    26.6    29.3            27.8    26.3    29.1

Civilian Pop'n. by Sex, Age, & Geographic Region: U.S., 1989

       Civilian Population* by Sex, Age, and Geographic Region:
                     United States, July 1, 1989

          (Population estimates consistent with Series P-25,
        Current Population Reports, U.S. Bureau of the Census)

 *The NHDS used the civilian noninstitutionalized population to calculate
 hospital utilization rates from 1965 through 1980.  Beginning in 1981, the
 civilian resident population has been used to calculate rates.  If you have
 purchased NHDS tapes for years before 1981 and calculated rates using the
 civilian noninstitutionalized population provided in the documentation, these
 rates will have to be adjusted to be comparable to 1985 rates using the
 civilian resident population.
 _____________________________________________________________________________
                   United    North-
 Age and Sex       States     east     Midwest   South     West
 _____________________________________________________________________________

                                 Number in Thousands
    Both Sexes
 All Ages         246,552   50,658    60,007      84,653    51,234
 0-4 years         18,752    3,573     4,382       6,472     4,325
 5-14 years        35,162    6,525     8,659      12,370     7,607
 15-19 years       17,665    3,494     4,379       6,288     3,503
 20-24 years       18,144    3,778     4,445       6,243     3,678
 25-29 years       21,301    4,284     5,208       7,253     4,556
 30-34 years       21,876    4,329     5,310       7,343     4,894
 35-44 years       36,216    7,417     8,619      12,215     7,966
 45-54 years       24,859    5,380     6,008       8,480     4,992
 55-59 years       10,725    2,417     2,610       3,657     2,041
 60-64 years       10,867    2,522     2,646       3,691     2,007
 65-74 years       18,182    4,047     4,436       6,302     3,397
 75-84 years        9,761    2,195     2,474       3,353     1,738
 85 years & over    3,042      699       830         985       528

 Under 1 year       3,945      764       909       1,351       921
 Under 17 years    60,547   11,382    14,672      21,238    13,255
 65 years & over   30,984    6,941     7,740      10,640     5,663

    Males
 All ages         119,467   24,235    29,169      40,808    25,256
 0-4 years          9,598    1,829     2,245       3,309     2,215
 5-14 years        18,011    3,342     4,441       6,333     3,895
 15-19 years        8,959    1,769     2,227       3,186     1,777
 20-24 years        8,870    1,838     2,191       3,022     1,819
 25-29 years       10,515    2,097     2,596       3,542     2,281
 30-34 years       10,847    2,123     2,652       3,610     2,463
 35-44 years       17,759    3,593     4,248       5,945     3,973
 45-54 years       12,074    2,585     2,938       4,085     2,468
 55-59 years        5,119    1,146     1,262       1,723       989
 60-64 years        5,079    1,167     1,244       1,705       962
 65-74 years        8,095    1,764     1,973       2,795     1,564
 75-84 years        3,692      799       925       1,271       697
 85 years & over      850      185       227         281       156

 Under 1 year       2,020      391       466         691       472
 Under 17 years    31,006    5,828     7,523      10,869     6,786
 65 years & over   12,636    2,748     3,125       4,347     2,416

    Females
 All Ages         127,084   26,422    30,839      43,845    25,978
 0-4 years          9,155    1,744     2,137       3,163     2,111
 5-14 years        17,151    3,182     4,219       6,038     3,712
 15-19 years        8,706    1,725     2,152       3,103     1,727
 20-24 years        9,274    1,940     2,254       3,221     1,860
 25-29 years       10,786    2,187     2,613       3,711     2,275
 30-34 years       11,028    2,206     2,658       3,733     2,432
 35-44 years       18,458    3,824     4,371       6,269     3,993
 45-54 years       12,785    2,795     3,070       4,396     2,524
 55-59 years        5,605    1,271     1,348       1,934     1,053
 60-64 years        5,788    1,355     1,402       1,986     1,045
 65-74 years       10,087    2,284     2,463       3,507     1,833
 75-84 years        6,069    1,396     1,550       2,082     1,041
 85 years & over    2,192      513       603         704       372

 Under 1 year       1,925      373       443         660       449
 Under 17 years    29,540    5,554     7,149      10,369     6,468
 65 years & over   18,348    4,193     4,615       6,293     3,247

 _____________________________________________________________________________

 *The NHDS used the civilian noninstitutionalized population to calculate
 hospital utilization rates from 1965 through 1980.  Beginning in 1981, the
 civilian resident population has been used to calculate rates.  If you have
 purchased NHDS tapes for years before 1981 and calculated rates using the
 civilian noninstitutionalized population provided in the documentation, these
 rates will have to be adjusted to be comparable to 1989 rates using the
 civilian resident population.

Estimates of the Both Sexes Civilian Population of States

           ESTIMATES OF THE BOTH SEXES CIVILIAN POPULATION OF STATES
                                (IN THOUSANDS)

 AGE                     TOTAL     0-4     5-14   20-24    20-24    25-29
   NORTHEAST             50478    3488     6458    3642     3917     4325
   NEW ENGLAND           12915     893     1608     935     1037     1171
   MIDDLE ATLANTIC       39563    2595     4850    2707     2880     3154
   MIDWEST               59739    4362     8581    4498     4599     5301
   EAST NORTH CENTRA     42052    3056     6038    3218     3276     3723
   WEST NORTH CENTRA     17686    1306     2542    1280     1323     1577
   SOUTH                 83791    6403    12247    6396     6405     7300
   SOUTH ATLANTIC        41864    3036     5665    3098     3168     3572
   EAST SOUTH CENTRA     15248    1087     2300    1225     1195     1329
   WEST SOUTH CENTRA     26678    2281     4281    2074     2042     2399
   WEST                  50118    4203     7369    3530     3702     4557
   MOUNTAIN              13218    1138     2109     981      991     1196
   PACIFIC               36905    2065     5260    2550     2711     3361
 U.S.                   244125   18456    34655   18066    18623    21483

 AGE                     30-34   35-44    45-54   55-59    60-64    64-74
   NORTHEAST              4254    7237     5246    2490     2554     4028
   NEW ENGLAND            1124    1895     1293     603      619     1001
   MIDDLE ATLANTIC        3130    5342     3953    1887     1935     3028
   MIDWEST                5237    8337     5865    2571     2676     4375
   EAST NORTH CENTRA      3695    5894     4166    1893     1899     3055
   WEST NORTH CENTRA      1542    2443     1697     778      777     1320
   SOUTH                  7232   11605     8240    3692     3696     6171
   SOUTH ATLANTIC         3542    5973     4277    1956     2027     3346
   EAST SOUTH CENTRA      1280    2099     1505     668      652     1118
   WEST SOUTH CENTRA      2410    3732     2458    1066     1018     1707
   WEST                   4821    7600     4773    2043     2007     3322
   MOUNTAIN               1234    1926     1194     511      497      876
   PACIFIC                3587    5674     3579    1532     1510     2446
 U.S.                    21543   34979    24125   10895    10933    17897

 AGE                     75-84    85+       0      0-16     65+
   NORTHEAST              2157     682      745   11300     6867       0
   NEW ENGLAND             550     186      191    2844     1737       0
   MIDDLE ATLANTIC        1607     496      554    8455     5130       0
   MIDWEST                2427     810      901   14652     7612       0
   EAST NORTH CENTRA      1617     520      635   10327     5191       0
   WEST NORTH CENTRA       811     290      266    4325     2421       0
   SOUTH                  3257     946     1326   21143    10375       0
   SOUTH ATLANTIC         1718     484      640    9893     5549       0
   EAST SOUTH CENTRA       610     181      223    3869     1909       0
   WEST SOUTH CENTRA       929     281      462    7381     2917       0
   WEST                   1680     511      887   12911     5512       0
   MOUNTAIN                436     123      235    3623     1436       0
   PACIFIC                1243     388      653    9288     1436       0
 U.S.                     9521    2948     3859   60005    30367       0

Estimates of the Male Civilian Population of States

               ESTIMATES OF THE MALE CIVILIAN POPULATION OF STATES
                                 (IN THOUSANDS)

 AGE                     TOTAL     0-4     5-14   20-24    20-24    25-29
   NORTHEAST             24133    1785     3308    1843     1906     2117
   NEW ENGLAND            6201     457      825     471      505      575
   MIDDLE ATLANTIC       17932    1328     2483    1371     1401     1542
   MIDWEST               29022    2235     4400    2286     2268     2642
   EAST NORTH CENTRA     42052    1566     3096    1635     1615     1851
   WEST NORTH CENTRA     17686     669     1304     651      653      790
   SOUTH                 83791    3274     6269    3238     3103     3565
   SOUTH ATLANTIC        41864    1553     2899    1562     1518     1725
   EAST SOUTH CENTRA     15248     555     1180     624      579      648
   WEST SOUTH CENTRA     26678    1166     2191    1052     1004     1192
   WEST                  50118    2152     3773    1789     1831     2281
   MOUNTAIN              13218     583     1079     495      485      600
   PACIFIC               36905    1570     2694    1294     1345     1681
 U.S.                   244125    9446    17750    9156     9106    10605

 AGE                     30-34   35-44    45-54   55-59    60-64    64-74
   NORTHEAST              2084    3501     2520    1179     1178     1750
   NEW ENGLAND             555     929      628     283      287      438
   MIDDLE ATLANTIC        1529    2572     1892     891      891     1313
   MIDWEST                2614    4103     2868    1290     1255     1939
   EAST NORTH CENTRA      1839    2896     2035     911      889     1346
   WEST NORTH CENTRA       775    1208      833     378      365      593
   SOUTH                  3553    5738     3968    1737     1703     2728
   SOUTH ATLANTIC         1724    2891     2056     914      927     1482
   EAST SOUTH CENTRA       630    1017      719     313      299      485
   WEST SOUTH CENTRA      1198    1830     1193     510      477      762
   WEST                   2424    3785     2359     983      960     1527
   MOUNTAIN                626     959      592     247      239      409
   PACIFIC                1798    2826     1768     741      721     1118
 U.S.                    10675   17128    11714    5194     5096     7945

 AGE                     75-84    85+       0      0-16     65+
   NORTHEAST               781     181      382    5785     2712       0
   NEW ENGLAND             197      47       98    1458      682       0
   MIDDLE ATLANTIC         584     134      284    4328     2031       0
   MIDWEST                 902     222      462    7512     3063       0
   EAST NORTH CENTRA       597     141      325    5293     2084       0
   WEST NORTH CENTRA       305      80      136    2218      979       0
   SOUTH                  1230     272      678   10819     4230       0
   SOUTH ATLANTIC          654     140      328    5061     2276       0
   EAST SOUTH CENTRA       226      52      114    1982      763       0
   WEST SOUTH CENTRA       350      80      236    3776     1192       0
   WEST                    671     149      455    6610     2348       0
   MOUNTAIN                179      37      120    1854      625       0
   PACIFIC                 492     112      335    4756     1723       0
 U.S.                     3584     825     1976   30726    12353       0

Estimates of the Female Civilian Population of States

              ESTIMATES OF THE FEMALE CIVILIAN POPULATION OF STATES
                                 (IN THOUSANDS)

 AGE                     TOTAL     0-4     5-14   20-24    20-24    25-29
   NORTHEAST             26345    1702     3150    1799     2011     2208
   NEW ENGLAND            6714     435      783     463      532      597
   MIDDLE ATLANTIC       19631    1267     2367    1336     1479     1612
   MIDWEST               30716    2127     4180    2212     2331     2659
   EAST NORTH CENTRA     21635    1491     2942    1582     1661     1872
   WEST NORTH CENTRA      9082     636     1238     629      670      787
   SOUTH                 43413    3129     5977    3158     3304     3735
   SOUTH ATLANTIC        21819    1483     2766    1536     1650     1848
   EAST SOUTH CENTRA      7921     531     1121     601      616      680
   WEST SOUTH CENTRA     13673    1115     2091    1021     1038     1207
   WEST                  25428    2051     3596    1741     1871     2276
   MOUNTAIN               6683     555     1030     485      506      595
   PACIFIC               18745    1495     2566    1256     1365     1680
 U.S.                   125902    9009    16904    8909     9518    10879

 AGE                     30-34   35-44    45-54   55-59    60-64    64-74
   NORTHEAST              2170    3736     2726    1311     1376     2278
   NEW ENGLAND             569     967      665     316      332      563
   MIDDLE ATLANTIC        1601    2770     2062     995     1044     1715
   MIDWEST                2623    4234     2998    1381     1421     2436
   EAST NORTH CENTRA      1856    2998     2133     982     1009     1709
   WEST NORTH CENTRA       767    1235      864     399      412      728
   SOUTH                  3679    6067     4272    1954     1993     3443
   SOUTH ATLANTIC         1817    3082     2221     944     1100     1865
   EAST SOUTH CENTRA       650    1082      786     354      352      632
   WEST SOUTH CENTRA      1211    1903     1265     558      541      946
   WEST                   2397    3815     2414    1055     1047     1795
   MOUNTAIN                608     967      602     264      259      467
   PACIFIC                1789    2848     1812     791      789     1328
 U.S.                    10868   17852    12410    5701     5837     9953

 AGE                     75-84    85+       0      0-16     65+
   NORTHEAST              1376     501      364    5514     4155       0
   NEW ENGLAND             353     140       93    1387     1055       0
   MIDDLE ATLANTIC        1023     361      271    4128     3100       0
   MIDWEST                1525     588      439    7140     4549       0
   EAST NORTH CENTRA      1020     378      310    5033     3107       0
   WEST NORTH CENTRA       505     210      129    2106     1443       0
   SOUTH                  2027     674      648   10324     6144       0
   SOUTH ATLANTIC         1064     344      312    4831     3273       0
   EAST SOUTH CENTRA       384     129      109    1887     1146       0
   WEST SOUTH CENTRA       579     200      227    3605     1725       0
   WEST                   1009     361      432    6301     3165       0
   MOUNTAIN                258      86      114    1770      811       0
   PACIFIC                 751     276      218    4531     2354       0
 U.S.                     5937    2124     1883   29279    18014       0

DISCHARGE POPULATIONS FOR NHDS - 1988


                   DISCHARGE POPULATION FOR NHDS - 1988
                                      RACE
     AGE       White     Black    Natv   Asian     Other   Unknown      TOTAL
    GROUPS                        Amer
  MALES
     Nwbn  1,217,920   274,646   4,181  39,745    87,785   257,649  1,881,926
     < 1     266,208    71,601   4,121  11,364    29,283    59,545    442,122
     1- 4    296,178    88,017   3,262   7,368    21,326    38,379    454,530
     5-14    417,764    77,807   2,724  10,779    22,553    57,523    589,150
    15-24    670,369   142,068  10,710   5,565    24,368    85,357    938,437
    25-34    846,968   203,559   3,700   9,849    34,274   109,401  1,207,751
    35-44    956,791   213,880   6,787  17,236    28,846   115,399  1,338,939
    45-54  1,006,034   172,490   7,376  16,024    26,891   111,724  1,340,539
    55-64  1,505,851   162,053   2,294  18,842    31,029   160,214  1,880,283
    65-74  1,896,540   168,154   2,215  20,901    23,636   194,922  2,306,368
     > 75  1,763,799   165,586   2,768  15,012    24,686   171,995  2,143,846
   ALL MALES
          10,844,422 1,739,861  50,138 172,685   354,677 1,362,108 14,523,891
  FEMALES
     Nwbn  1,203,657   262,030   4,834  39,068    81,756   259,264  1,850,609
     < 1     199,272    60,159   3,455   6,860    19,532    42,525    331,803
     1- 4    202,966    58,011   1,152   4,113    19,462    37,908    323,612
     5-14    340,300    65,861     224   3,431    19,452    39,945    469,213
    15-24  1,791,593   545,743  13,454  31,793   108,378   301,742  2,792,703
    25-34  2,671,670   524,477   6,325  69,376   127,847   411,067  3,810,762
    35-44  1,322,505   264,946   7,368  31,757    47,717   170,655  1,844,948
    45-54  1,084,687   179,311   7,936  21,557    31,017   132,028  1,456,536
    55-64  1,380,426   200,511   3,733  18,606    28,800   146,688  1,778,764
    65-74  1,921,490   238,366   3,598  18,574    30,236   184,545  2,396,809
     > 75  2,780,233   226,197   2,268  13,992    31,353   245,202  3,299,245
 ALL FEMALES
          14,898,799 2,625,612  54,347 259,127   545,550 1,971,569 20,355,004
 GRAND TOTAL
          25,743,221 4,365,473 104,485 431,812   900,227 3,333,677 34,878,895


DISCHARGE POPULATION FOR NHDS - 1989
                                      RACE
     AGE       White     Black    Natv   Asian     Other   Unknown      TOTAL
    GROUPS                        Amer
  MALES
     Nwbn  1,266,843   282,445   6,045  53,705    80,282   300,142  1,989,462
     < 1     254,588    98,886   1,632  11,390    15,063    89,357    470,916
     1- 4    317,612    93,025   2,652   5,448    12,707    66,164    497,608
     5-14    371,082    82,794   1,524   7,267    17,545    71,826    552,038
    15-24    591,060   132,359   3,235   9,518    17,807    92,358    846,337
    25-34    815,632   221,089   4,707  12,757    20,153   129,770  1,204,108
    35-44    940,038   241,202   7,259  11,800    22,012   132,306  1,354,617
    45-54  1,009,913   181,039   4,533  16,345    24,439   122,626  1,358,895
    55-64  1,445,207   154,771   3,958  15,054    24,911   176,659  1,820,560
    65-74  1,859,256   142,296   4,971  24,979    16,185   227,627  2,275,314
     > 75  1,790,144   159,984   2,930  21,559    13,712   214,432  2,202,761
   ALL MALES
          10,661,375 1,789,890  43,446 189,822   264,816 1,623,267 14,572,616
  FEMALES
     Nwbn  1,189,603   286,173   4,513  43,018    65,609   306,103  1,895,019
     < 1     187,930    59,627     464   7,579    13,221    51,145    319,966
     1- 4    204,366    57,733   2,302   5,575     8,075    43,802    321,853
     5-14    296,407    67,601   2,243   3,797    10,369    54,545    434,962
    15-24  1,685,188   572,331  12,037  34,180    87,031   380,363  2,771,130
    25-34  2,590,337   513,311  14,326  77,896   103,630   465,142  3,764,642
    35-44  1,328,294   271,572   6,235  34,847    33,975   232,517  1,907,440
    45-54  1,074,056   199,570   3,949  15,314    18,698   141,689  1,453,276
    55-64  1,250,835   185,798   3,605  14,778    20,969   162,780  1,638,765
    65-74  1,896,584   215,262   5,596  13,457    23,042   248,637  2,402,578
     > 75  2,769,087   240,775   5,442  12,939    22,782   297,927  3,348,952
 ALL FEMALES
          14,472,687 2,669,753  60,712 263,380   407,401 2,384,650 20,258,583
 GRAND TOTAL
          25,134,062 4,459,643 104,158 453,202   672,217 4,007,917 34,831,199


DISCHARGE POPULATION FOR NHDS - 1990
                                     RACE
     AGE       White     Black    Natv   Asian     Other   Unknown      TOTAL
    GROUPS                        Amer
  MALES
     Nwbn  1,189,821   270,829   9,005  53,468    81,324   377,492  1,981,939
     < 1     249,689    82,479   1,485   8,554    13,504   102,097    457,808
     1- 4    239,318    75,129   1,610  10,194     7,867    69,375    403,493
     5-14    316,313    81,256     835   8,633     8,299    85,832    501,168
    15-24    534,521   123,622   3,207   8,226    15,354   130,950    815,880
    25-34    782,581   194,023   3,009  12,785    22,590   188,707  1,203,695
    35-44    862,804   215,812   6,686  11,692    19,618   193,586  1,310,198
    45-54    936,898   155,068   2,930  17,774    19,801   228,765  1,361,236
    55-64  1,304,446   156,526   5,128  19,497    21,185   247,466  1,754,248
    65-74  1,740,424   146,452   7,441  23,760    19,131   331,255  2,268,463
     > 75  1,700,675   133,280   5,148  21,929    16,622   325,761  2,203,415
   ALL MALES
           9,857,490 1,634,476  46,484 196,512   245,295 2,281,286 14,261,543
  FEMALES
     Nwbn  1,161,946   249,950   5,191  47,769    70,457   351,837  1,887,150
     < 1     193,078    60,886   2,017   6,864     9,960    60,843    333,648
     1- 4    183,505    55,468   2,540   7,624     5,881    60,218    315,236
     5-14    261,710    52,771     591   5,232     8,717    71,193    400,214
    15-24  1,594,432   520,153   9,783  35,035    80,797   479,442  2,719,642
    25-34  2,425,300   487,352   8,933  83,636    99,103   656,770  3,761,094
    35-44  1,320,977   273,105   6,711  35,942    34,492   317,054  1,988,281
    45-54  1,027,553   177,634   3,864  17,837    19,170   224,963  1,471,021
    55-64  1,173,610   185,666   3,288  16,413    19,582   259,310  1,657,869
    65-74  1,822,025   209,984   4,461  18,644    18,799   347,067  2,420,980
     > 75  2,705,997   224,537   5,896  18,433    23,499   461,988  3,440,350
 ALL FEMALES
          13,870,133 2,497,506  53,275 293,429   390,457 3,290,685 20,395,485
 GRAND TOTAL
          23,727,623 4,131,982  99,759 489,941   635,752 5,571,971 34,657,028

 ICD-9-CM PROCEDURES NOT CODED
 ICD-9-CM Procedures Not Coded for the 1988 NHDS

           UHDDS CLASS 4 PROCEDURES NOT CODED BY THE NHDS

                  08.19                   87.43-87.49
                  16.21                   87.69
                  18.01                   87.79
                  18.11                   87.85-87.89
                  18.19                   87.92
                  21.21                   87.95-87.99
                  21.29                   88.09
                  22.19                   88.16-88.31
                  24.19                   88.33
                  25.09                   88.35
                  25.91                   88.37
                  26.19                   88.39
                  27.29                   89.01-89.13
                  27.91                   89.15-89.16
                  28.19                   89.26-89.31
                  29.19                   89.33-89.39
                  31.48-31.49             89.45-89.53
                  41.38-41.39             89.55-89.59
                  42.29                   89.66
                  44.19                   89.7
                  45.19                   90.01-91.99
                  45.28-45.29             93.01-93.25
                  48.23                   93.27-93.28
                  48.29                   93.31-93.39
                  49.21                   93.42-93.44
                  49.29                   93.61-93-91
                  49.41                   93.94
                  58.29                   93.96
                  61.19                   93.99-94.23
                  64.19                   94.25
                  64.91                   94.29-95.03
                  64.94                   95.05-95.11
                  69.92                   95.14-95.15
                  70.21                   95.31-95.49
                  73.91-73.92             96.09-96.19
                  75.35                   96.26-96.28
                  85.19                   96.34-97.04
                  86.19                   97.14-97-69
                  86.92                   97.72-97.89
                  87.09-87.12             99.02-99.24
                  87.16-87.17             99.26-99.59
                  87.22-87.29             99.71-99.79
                  87.36-87.37             99.82-99.99
                  87.39

ICD-9-CM Procedures Not Coded for the 1989 NHDS

             ICD-9-CM Procedure Codes Not Coded for the 1989 NHDS


                 87.09-87.12                  93.01-93.25
                 87.16--87.17                 93.27-93.28
                 87.22-87.29                  93.31-93.39
                 87.39                        93.61-93.89
                 87.43-87.49                  94.01-94.23
                 87.85-87.89                  94.29-94.59
                 87.92                        95.01-95.03
                 87.95-87.99                  95.05-95.09
                 88.09                        95.14-95.15
                 88.16-88.19                  95.31-95.48
                 88.21-88.29                  96.11-96.19
                 88.31                        96.26-96.28
                 88.33                        96.34-96.48
                 88.35                        96.51-96.59
                 88.37                        96.6
                 88.39                        97.01-97.04
                 89.01-89.13                  97.14-97.69
                 89.15-89.16                  97.72-97.87
                 89.26-89.31                  97.89
                 89.33-89.39                  99.12-99.14
                 89.7-89.8                    99.16-99.18
                 90.01-91-99                  99.26-99.59
APPENDIX
 Appendix A - Definition of Terms
 Terms Relating to Hospitals and Hospitalization

 Hospitals--Short stay hospitals or hospitals whose specialty is general
 (medical or surgical), or children's general.  Hospitals must have six beds
 or more staffed for patients use.  Federal hospitals and hospital units of
 institutions are not included.

 Type of ownership of hospital--The type of organization that controls and
 operates the hospital.  Hospitals are grouped as follows.

 Not for Profit--Hospitals operated by a church or another not for profit
 organization.

 Government--Hospitals operated by State and local government.

 Proprietary--Hospitals operated by individuals, partnerships, or corporations
 for profit.

 Patient--A person who is formally admitted to the inpatient service of a
 short-stay hospital for observation, care, diagnosis, or treatment, or by
 birth.

 Discharge--The formal release of a patient by a hospital; that is, the
 termination of a period of hospitalization by death or by disposition to
 place of residence, nursing home, or another hospital.  The terms "dis-
 charges" and "patients discharged" are used synonymously.

 Discharge rate--The ratio of the number of hospital discharges during the
 year to the number of persons in the civilian population on July 1 of that
 year.

 Days of care--The total number of patient days accumulated at time of
 discharge by patients discharged from short-stay hospitals during a year.  A
 stay of less than one day (patient admission and discharge on the same day)
 is counted as one day in the summation of total days of care.  For patients
 admitted and discharged on different days, the number of days of care is
 computed by counting all days from (and including) the date of admission to
 (but not including) the date of discharge.

 Rate of days of care--The ratio of the number of patient days accumulated at
 time of discharge to the number of persons in the civilian population on
 July 1 of that year.

 Average length of stay--The total number of days of care accumulated at time
 of discharge by patients discharged during the year, divided by the number of
 patients discharged.

Terms Relating to Diagnoses and Procedures

 Discharge diagnoses--One or more diseases or injuries (or some factor that
 influences health status and contact with health services that is not itself
 a current illness or injury) listed by the attending physician on the medical
 record of a patient.  In the NHDS, discharge (or final) diagnoses listed on
 the face sheet (summary sheet) of the medical record are transcribed in the
 order listed.  Each sample discharge is assigned a maximum of seven five-
 digit codes according to ICD-9-CM (2).

 Principal diagnosis--The condition established after study to be chiefly
 responsible for occasioning the admission of the patient to the hospital for
 care.

 First-listed diagnosis--The coded diagnosis identified as the principal
 diagnosis or listed first on the face sheet of the medical record if the
 principal diagnosis cannot be identified. The number of first-listed diag-
 noses is equivalent to the number of discharges.

 Procedure--One or more surgical or nonsurgical operations, procedures, or
 special treatments listed by the physician on the medical record.  In the
 NHDS, all terms listed on the face sheet (summary sheet) of the medical
 record under the caption "operation," "operative procedures," "operations and
 /or special
 treatment," and the like, are transcribed in the order listed.  A maximum of
 four procedures are coded.

 Rate of procedures--The ratio of the number of all-listed procedures during a
 year to the number of persons in the civilian population on July 1 of that
 year determines the rate of procedures.

Demographic Terms

 Age--Refers to the age of the patient on the birthday prior to admission to
 the hospital inpatient service.

 Population--Civilian population is the resident population excluding members
 of the Armed Forces.

 Geographic regions--Hospitals are classified by location in one of the four
 geographic regions of the United States corresponding to those used by the
 U.S. Bureau of the Census:

 Region                     States included

 Northeast..............Maine, New Hampshire, Vermont,
                                  Massachusetts, Rhode Island,
                                  Connecticut, New York, New Jersey,
                                  and Pennsylvania

 Midwest..............  Michigan, Ohio, Illinois, Indiana,
                                  Wisconsin, Minnesota, Iowa, Missouri,
                                  North Dakota, South Dakota, Nebraska,
                                  and Kansas

 South...............   Delaware, Maryland, District of Columbia,
                                  Virginia, West Virginia, North Carolina,
                                  South Carolina, Georgia, Florida, Kentucky,
                                  Tennessee, Alabama, Mississippi, Arkansas,
                                  Louisiana, Oklahoma, and Texas

 West................   Montana, Idaho, Wyoming, Colorado,
                                  New Mexico, Arizona, Utah, Nevada,
                                  Washington, Oregon, California, Hawaii,
                                  and Alaska


Appendix B - Civ Pop by Sex,Age,Geographic Region,Race, July 1990
 Civilian Population* by Sex, Age, Geographic Region and Race:
          United States, July 1, 1990

    (Population estimates consistent with Series P-25,
  Current Population Reports, U.S. Bureau of the Census)

 At the time that this document was released, the estimates for the
 Civilian Resident population for 1990 were not available from the Bureau
 of the Census.  Users of the 1990 data tape and its documentation will be
 provided with the estimates when they become available.  This will
 probably be by early next spring, perhaps in March.


Appendix C - ICD-9-CM Addenda, 1989
Diagnosis Codes

                 Current                             Previous
                 Codes(s)            Effective       Code(s)
                 Assignment          October 1       Assignment
                 ____________________________________________________

                 042.0-042.9         1986            279.19
                 043.0-043.9         1986            279.19
                 044.0-044.9         1986            279.19

                 088.81, 088.89      1989            088.8

                 345.00-345.01       1989            345.0
                 345.10-345.11       1989            345.1
                 345.40-345.41       1989            345.4
                 345.50-345.51       1989            345.5
                 345.60-345.61       1989            345.6
                 345.70-345.71       1989            345.7
                 345.80-345.81       1989            345.8
                 345.90-345.91       1989            345.9

                 403.00-403.01       1989            403.0
                 403.10-403.11       1989            403.1
                 403.90-403.91       1989            403.9

                 404.00-404.03       1989            404.0
                 404.10-404.13       1989            404.1
                 404.90-404.93       1989            404.9

                 410.00-410.02       1989            410.0
                 410.10-410.12       1989            410.1
                 410.20-410.22       1989            410.2
                 410.30-410.32       1989            410.3
                 410.40-410.42       1989            410.4
                 410.50-410.52       1989            410.5
                 410.60-410.62       1989            410.6
                 410.70-410.72       1989            410.7
                 410.80-410.82       1989            410.8
                 410.90-410.92       1989            410.9

                 411.81              1989            410.9

                 411.89              1989            411.8

                 429.71              1989            410.0-410.9
                 429.79              1989            410.0-410.9

                 493.20              1989            493.90
                 493.21              1989            493.91

                 518.81              1987            799.1
                 518.82-518.89       1987            518.8

                 651.30--651.31,
                 651.33              1989            651.00-651.01, 651.03
                 651.40-651.41,
                 651.43              1989            651.10-651.11, 651.13
                 651.50-651.51,
                 651.53              1989            651.20-651.21, 651.23
                 651.60-651.61,
                 651.63              1989            651.80-651.81, 651.83

                 759.81-759.89       1989            759.8

                 764.00-764.09       1988            764.0
                 764.10-764.19       1988            764.1
                 764.20-764.29       1988            764.2
                 764.90-764.99       1988            764.9

                 765.00-765.09       1988            765.0
                 765.10-765.19       1988            765.1

                 795.8               1986            795.7

                 996.51-996.59       1987            996.5
                 996.60    996.69    1989            996.6
                 996.70-996.79       1989            996.7
                 996.80-996.89       1987            996.8

                 V30.00-V30.01       1989            V30.0
                 V31.00-V31.01       1989            V31.0
                 V32.00-V32.01       1989            V32.0
                 V33.00-V33.01       1989            V33.0
                 V34.00-V34.01       1989            V34.0
                 V35.00-V35.01       1989            V35.0
                 V36.00-V36.01       1989            V36.0
                 V37.00-V37.01       1989            V37.0
                 V39.00-V39.01       1989            V39.0

Procedure Codes

         Current                                           Previous
         Code(s)                     Effective             Code(s)
         Assignment                  October 1             Assignment
         ____________________________________________________________

         03.90                       1987                  03.99 (Insertion of
                                                                  Catheter)
         11.75                       1989                  11.79
         11.76                       1989                  11.62

         20.96-20.98                 1986                  20.95

         22.12                       1988                  22.11

         26.12                       1988                  26.11

         31.45                       1988                  31.43-31.44

         31.95                       1989                  31.75

         32.01                       1989                  32.0
         32.09                       1989                  32.0

         32.28                       1989                  32.29

         33.27                       1987                  33.22+33.27
         33.28                       1987                  33.27
         33.29                       1987                  33.28-33.29

         35.84                       1988                  35.82
         35.96                       1986                  35.03

         36.00-36.03                 1986                  36.0
         36.04                       1986                  39.97
         36.05                       1987                  36.01*
         36.09                       1986                  36.0

         37.26-37.27                 1988                  37.29

         37.34                       1988                  37.33

         37.70                       1987  (Leads/Device)  37.70
         37.71-37.72 (Leads Only)    1987  (Leads/Device)  37.74
         37.73       (Leads Only)    1987  (Leads/Device)  37.73
         37.74       (Leads Only)    1987  (Leads/Device)  37.76
         37.75       (Leads Only)    1987  (Leads/Device)  37.89
         37.76       (Leads Only)    1987  (Leads/Device)  37.81
         37.77       (Leads Only)    1987  (Leads/Device)  37.83-37.84

         37.78                       1987                  37.71-37.72
         37.79                       1987                  86.09

         *Before October 1987, contents of current code 36.05
          would have been assigned to 36.0.

         37.80       (Device only)   1987  (Leads/Device)  37.73-37.77
         37.81       (Device only)   1987  (Leads/Device)  37.73-37.77
         37.82       (Device only)   1987  (Leads/Device)  37.73-37.77
         37.83       (Device only)   1987  (Leads/Device)  37.73-37.77
         37.85-37.87                 1987                  37.85

         37.89                       1987                  37.86+37.89

         37.94                       1986                  37.99

         38.22                       1986                  38.29

         38.44 Abdominal Aorta Only  1986                  38.44(Entire Aorta)
         38.45 Thoracic Aorta Added  1986                  38.44-38.45

         38.95                       1989                  38.93

         39.65                       1988                  39.61

         41.00-41.03                 1988                  41.0

         42.25                       1988                  42.24

         42.33                       1989                  42.32, 42.39

         43.11                       1989                  43.1
         43.19                       1989                  43.1, 43.2

         43.41                       1989                  43.41, 43.49

         44.21                       1986                  44.2
         44.22                       1986                  44.99
         44.29                       1986                  44.2

         44.43                       1989                  43.49, 45.32

         44.44                       1989                  38.86
         44.49                       1989                  43.0

         44.93-44.94                 1986                  44.99

         45.16                       1988                  45.14 (45.15 before
                                                                  1987)
         45.30                       1988                  45.31, 45.32

         45.42                       1988                  45.41
         45.43                       1989                  45.49
         45.75 (Hartmann Resection   1988                  48.66(Code Deleted)
               Added)

         45.95                       1987                  45.93

         46.32                       1989                  46.39

         46.85                       1989                  46.99

         49.31                       1989                  49.3
         49.39                       1989                  49.3

         51.10                       1989                  51.97
         51.11                       1989                  51.11, 51.97
         51.14                       1989                  51.12
         51.15                       1989                  51.97

         51.64                       1989                  51.69

         51.84-51.88                 1989                  51.97

         51.97                       1986                  52.91, 51.99 or
                                                           51.82
         51.98                       1986                  51.99

         52.13                       1989                  51.97, 52.91
         52.14                       1989                  52.11

         52.21                       1989                  52.2
         52.22                       1989                  52.2

         52.93                       1989                  52.93-52.91
         52.94                       1989                  52.09
         52.97                       1989                  52.91
         52.98                       1989                  52.91
         52.99                       1989                  52.93, 52.94, 52.99

         54.24                       1987                  54.23

         55.03-55.04                 1986                  55.02

         56.33-56.34                 1987                  56.33
         56.35                       1987                  45.12

         57.17-57.18                 1989                  57.21
         57.19                       1989                  57.19

         57.21                       1989                  57.21
         57.22                       1989                  57.22, 57.82

         58.93                       1986                  64.95

         59.96                       1986                  64.95

         64.97                       1986                  64.95

         68.15                       1987                  68.14
         68.16                       1987                  68.13

         77.56                       1989                  77.89, 78.49, 81.18
         77.57                       1989                  77.89, 80, 48,
                                                           81.18, 83.85,77.58,
                                                           19, 89, 77.59,
                                                           81.18

         78.90*                      1987                  78.40
         78.91*                      1987                  78.41
         78.92*                      1987                  78.42
         78.93*                      1987                  78.43
         78.94*                      1987                  78.44
         78.95*                      1987                  78.45
         78.96*                      1987                  78.46
         78.97*                      1987                  78.47
         78.98*                      1987                  78.48
         78.99*                      1987                  78.49

         80.50-80.59                 1986                  80.5

         81.03                       1989                  81.02
         81.04-81.05                 1989                  81.03, 81.04, 81.05

         81.06-81.07                 1989                  81.06, 81.07
         81.08                       1989                  81.06, 81.07, 81.08

         81.09                       1989                  81.08

         81.40                       1989                  81.69

         81.51                       1989                  81.51, 81.59
         81.52                       1989                  81.61, 81.62, 81.63,

         81.53                       1989                  81.51, 81.59, 81.61

         81.54-81.55                 1989                  81.41
         81.56                       1989                  81.48
         81.57                       1989                  81.31, 81.39
         81.59                       1989                  81.39

         *Codes 78.90-78.99 were retitled as "Insertion of one growth
          stimulator" in October 1987; the previous contents of codes
          78.90-78.99 were reassigned to codes 78.40-78.49.

         81.72                       1989                  81.79
         81.73-81.74                 1989                  81.86
         81.75                       1989                  81.87
         81.79                       1989                  81.79, 81.87
         81.80                       1989                  81.81

         85.95                       1987                  85.99
         85.96                       1987                  85.99

         86.06                       1987                  86.09

         86.27                       1986                  86.22-86.23
         86.28                       1988                  86.22

         86.93                       1987                  86.89

         88.90                       1986                  88.39
         88.91                       1986                  89.15
         88.92                       1986                  89.39
         88.93                       1986                  89.15
         88.94                       1986                  89.39
         88.95                       1986                  89.29
         88.97                       1989                  88.90
         88.98                       1989                  88.90
         88.99                       1986                  89.39

         89.10                       1989                  89.15
         89.17-89.18                 1988                  89.15
         89.19                       1989                  89.15

         93.90                       1988                  93.92

         94.61-94.69                 1989                  94.25

         96.6                        1986                  96.35

         97.05                       1989                  51.97

         98.51-98.52                 1989                  59.96
         98.59                       1989                  59.96

         99.15                       1986                  99.29

         99.71-99.79*                1988                  99.07

         99.85                       1987                  93.35
         99.86                       1987                  93.39
         99.88                       1988                  99.83

         *Codes 99.71-99.79 were deleted in October 1987; their contents were
          elsewhere.  In October 1988 revision, codes 99.71-9979 were read
          "Therapeutic apheresis."

Appendix D - ICD-9-CM Procedures Not Coded for the 1990 NHDS

                               APPENDIX D

            ICD-9-CM Procedures Not Coded for the 1990 NHDS



 87.09, 87.11, 87.12, 87.16-87.17, 87.22-87.29, 87.39, 87. 43-

 87.49, 87.85, 87.89, 87.92, 87.95, 87.99, 88.09, 88.16,

 88.19, 88.21-88.29, 88.31, 88.33, 88.35, 88.37, 88.39,

 89.01-89.09, 89.11-89.13, 89.15-89.16, 89.26, 89.29, 89.31,

 89.33-89.39, 89.7-89.8, 90.01-90.99, 91.01-91.99, 93.01-

 93.09, 93.11-93.19, 93.21-93.25, 93.27-93.28, 93.31-93.39,

 93.61-93.67, 93.71-93.78, 93.81-93.89, 94.01-94.09, 94.11-

 94. 19, 94.21-94.23, 94.29, 94.31-94.39, 94.41-94.49, 94 .51-

 94 .59, 95.01-95.03 95.05-95.09, 95.14-95.15, 95.31-95.36,

 95.41-95.48, 96.11-96.19, 96.26-96.28, 96.34-96.39, 96. 41-

 96.48, 96.51-96.59, 96.6, 97.01-97.04, 97.14-97.16, 97.21-

 97.29, 97.31-97.39, 97.41-97.49, 97.51-97.59, 97.61-97.69,

 97.72-97.79, 97.81-97.87, 97.89, 99.12-99.14, 99.16-99.18,

 99.26-99.29, 99.31-99.39, 99.41-99.48, 99.51-99.59


Appendix E - Frequencies for Selected NHDS Variables
 Unweighted Frequencies for Selected NHDS Variables

                 1.  UNWEIGHTED FREQUENCIES FOR SELECTED NHDS VARIABLES
                       (Note:    Freguencies exclude newborns)


                                        CUMULATIVE     CUMULATIVE
 ITEM 1       FREQUENCY     PERCENT      FREQUENCY       PERCENT
 -----------------------------------------------------------------
        1        226024        95.8        226024         95.8
        2          6849         2.9        232873         98.7
        3          3074         1.3        235947        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 3       FREQUENCY     PERCENT      FREQUENCY       PERCENT
 -----------------------------------------------------------------
                 194553       40.1          94553         40.1
  2              141394       59.9         235947        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 4       FREQUENCY     PERCENT      FREQUENCY       PERCENT
 -----------------------------------------------------------------
       1        42322        17.9          42322         17.9
       2        37617        15.9          79939         33.9
       3        12234         5.2          92173         39.1
       4         4183         1.8          96356         40.8
       5          882         0.4          97238         41.2
       6        96140        40.7         193378         82.0
       7        42569        18.0         235947        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 7       FREQUENCY     PERCENT      FREQUENCY       PERCENT
 -----------------------------------------------------------------
       1       197986        83.9         197986         83.9
       2         1979         0.8         199965         84.7
       3         5110         2.2         205075         86.9
       4        12377         5.2         217452         92.2
       5         8572         3.6         226024         95.8
       6         6849         2.9         232873         98.7
       7         3074         1.3         235947        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 8       FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
        1         23441         9.9         23441          9.9
        2         89393        37.9        112834         47.8
        3         46286        19.6        159120         67.4
        4         76827        32.6        235947        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 9       FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
       1        41765        17.7          41765         17.7
       2        54265        23.0          96030         40.7
       3        39779        16.9         135809         57.6
       4        31392        13.3         167201         70.9
       5        31315        13.3         198516         84.1
       6        14130         6.0         212646         90.1
       7        23301         9.9         235947        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 10      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
       0        75136        31.8          75136         31.8
       1        67185        28.5         142321         60.3
       2        43477        18.4         185798         78.7
       3        29767        12.6         215565         91.4
       4        20382         8.6         235947        100.0

                                         CUMULATIVE     CUMULATIVE
 ITEM 15      FREQUENCY       PERCENT    FREQUENCY        PERCENT
 ------------------------------------------------------------------
 NOTE:   No zero values appear since the distribution
         excludes newborns.  However, the newborns coded
         zero are included on the tape.

        1          7785         3.3          7785          3.3
        2          7244         3.1         15029          6.4
        3          8412         3.6         23441          9.9
        4         25812        10.9         49253         20.9
        5         38626        16.4         87879         37.2
        6         24955        10.6        112834         47.8
        7         21037         8.9        133871         56.7
        8         25249        10.7        159120         67.4
        9         34912        14.8        194032         82.2
       10         41915        17.8        235947        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 16      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
     l       152571        64.7         152571         64.7
     2        27473        11.6         180044         76.3
     3          455         0.2         180499         76.5
     4         4285         1.8         184784         78.3
     5         5393         2.3         190177         80.6
     6        45770        19.4         235947        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 18      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
        1        177187        75.1        177187         75.1
        2         36784        15.6        213971         90.7
        3         11135         4.7        225106         95.4
        4          4783         2.0        229889         97.4
        5          6058         2.6        235947        100.0

                                       CUMULATIVE    CUMULATIVE
 ITEM 19     FREQUENCY      PERCENT     FREQUENCY      PERCENT
 ---------------------------------------------------------------
      1         64201        27.2         64201        27.2
      2         61751        26.2        125952        53.4
      3         77085        32.7        203037        86.1
      4         32910        13.9        235947       100.0

                                       CUMULATIVE    CUMULATIVE
 ITEM 20     FREQUENCY      PERCENT     FREQUENCY      PERCENT
 ---------------------------------------------------------------
      1         18846         8.0         18846         8.0
      2         47728        20.2         66574        28.2
      3         65378        27.7        131952        55.9
      4         75439        32.0        207391        87.9
      5         28556        12.1        235947       100.0

                                       CUMULATIVE    CUMULATIVE
 ITEM 21     FREQUENCY      PERCENT     FREQUENCY      PERCENT
 ---------------------------------------------------------------
       1        24831        10.5          24831         10.5
       2        21385         9.1          46215         19.6
       3       189731        80.4         235947        100.0

                                        CUMULATIVE   CUMULATIVE
 ITEM 24.1 FREQUENCY        PERCENT      FREQUENCY     PERCENT
 ---------------------------------------------------------------
     0         8121         3.4           8121          3.4
     1         3240         1.4          11361          4.8
     2        75510        32.0          86871         36.8
     3        28383        12.0         115254         48.8
     4         5442         2.3         120696         51.2
     5         3888         1.6         124584         52.8
     6        27642        11.7         152226         64.5
     7        69765        29.6         221991         94.1
     8        13288         5.6         235279         99.7
     9          668         0.3         235947        100.0

                                        CUMULATIVE   CUMULATIVE
 ITEM 24.2 FREQUENCY        PERCENT      FREQUENCY     PERCENT
 ---------------------------------------------------------------
 FREQUENCY MISSING = 235947

                                        CUMULATIVE   CUMULATIVE
 ITEM 24.3 FREQUENCY        PERCENT      FREQUENCY     PERCENT
 ---------------------------------------------------------------
     0         3390         7.6
                                          3390          7.6
     2           45         0.1           3435          7.7
     3         6447        14.5           9882         22.2
     5         1010         2.3          10892         24.4
     6         9811        22.0          20703
     7        16479        37.0                        46.4
                                         37182         83.4
     8         6539        14.7          43721         98.1
     9          860         1.9          44581        100.0
 FREQUENCY MISSING = 191366

                                        CUMULATIVE   CUMULATIVE
 ITEM 24.4 FREQUENCY        PERCENT      FREQUENCY     PERCENT
 ---------------------------------------------------------------
     0          358        41.5            358         41.5
     3          123        14.3            481         55.8
     5            7         0.8            488         56.6
     6           58         6.7            546         63.3
     7          226        26.2            772         89.6
     8           90        10.4            862        100.0
 FREQUENCY MISSING = 235085

                                        CUMULATIVE   CUMULATIVE
 ITEM 24.5 FREQUENCY        PERCENT      FREQUENCY     PERCENT
 ---------------------------------------------------------------
     0            1         9.1              1          9.1
     2            1         9.1              2         18.2
     3            1         9.1              3         27.3
     5            3        27.3              6         54.5
     7            3        27.3              9         81.8
     8            1         9.1             10         90.9
     9            1         9.1             11        100.0
 FREQUENCY MISSING = 235936

                                        CUMULATIVE   CUMULATIVE
 ITEM 24.6 FREQUENCY        PERCENT      FREQUENCY     PERCENT
 ---------------------------------------------------------------
     5            1       100.0              1        100.0
 FREQUENCY MISSING = 235946
3Weighted Frequencies for Selected NHDS Variables

                  2.  WEIGHTED FREQUENCIES FOR SELECTED NHDS VARIABLES
                       (Note:    Frequencies exclude newborns)


                                        CUMULATIVE     CUMULATIVE
 ITEM 1       FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
        l      29412457        95.5      29412457         95.5
        2        877071         2.8      30289528         98.4
        3        498411         1.6      30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 3       FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
        1      12279604        39.9      12279604         39.9
        2      18508335        60.1      30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 4       FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
         1      9445257        30.7        9445257          30.7
         2      5949610        19.3       15394867          50.0
         3      2728940         8.9       18123807          58.9
         4       935675         3.0       19059482          61.9
         5       173747         0.6       19233229          62.5
         6      8250050        26.8       27483279          89.3
         7      3304660        10.7       30787939         100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 7       FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
       1     25712509        83.5       25712509         83.5
       2       255708         0.8       25968217         84.3
       3       804804         2.6       26773021         87.0
       4      1611637         5.2       28384658         92.2
       5      1027799         3.3       29412457         95.5
       6       877071         2.8       30289528         98.4
       7       498411         1.6       30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 8       FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
        1       2411567         7.8       2411567          7.8
        2      11798790        38.3      14210357         46.2
        3       6244374        20.3      20454731         66.4
        4      10333208        33.6      30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 9       FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
       l      5426647        17.6       5426647          17.6
       2      7024572        22.8       12451219         40.4
       3      5289771        17.2       17740990         57.6
       4      4008537        13.0       21749527         70.6
       5      3769837        12.2       25519364         82.9
       6      1940567         6.3       27459931         89.2
       7      3328008        10.8       30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 10      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
       0     10562232        34.3       10562232         34.3
       1      8683234        28.2       19245466         62.5
       2      5403647        17.6       24649113         80.1
       3      3540156        11.5       28189269         91.6
       4      2598670         8.4       30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 15      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
 NOTE:   No zero values appear since the distribution
         excludes newborns.  However, the newborns coded
         zero are included on the tape.

        1        791456         2.6        791456          2.6
        2        718729         2.3       1510185          4.9
        3        901382         2.9       2411567          7.8
        4       3535522        11.5       5947089         19.3
        5       4964789        16.1      10911878         35.4
        6       3298479        10.7      14210357         46.2
        7       2832257         9.2      17042614         55.4
        8       3412117        11.1      20454731         66.4
        9       4689443        15.2      25144174         81.7
       10       5643765        18.3      30787939        100.0

                                        CUMULATIVE    CUMULATIVE
 ITEM 16     FREQUENCY      PERCENT     FREQUENCY       PERCENT
 ----------------------------------------------------------------
     1     21375856        69.4       21375856         69.4
     2      3611203        11.7       24987059         81.2
     3        85563         0.3       25072622         81.4
     4       388704         1.3       25461326         82.7
     5       483971         1.6       25945297         84.3
     6      4842642        15.7       30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 18      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
        l      23335099        75.8      23335099         75.8
        2       4771767        15.5      28106866         91.3
        3       1378945         4.5      29485811         95.8
        4        581145         1.9      30066956         97.7
        5        720983         2.3      30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 19      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
      1       6895148        22.4       6895148        22.4
      2       7620112        24.8      14515260        47.1
      3      11173053        36.3      25688313        83.4
      4       5099626        16.6      30787939       100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 20      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
      1       5386894        17.5       5386894        17.5
      2       6920037        22.5      12306931        40.0
      3       6448587        20.9      18755518        60.9
      4       8391217        27.3      27146735        88.2
      5       3641204        11.8      30787939       100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 21      FREQUENCY      PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
       1      3226480        10.5        3226480         10.5
       2      3985809        12.9       13376813         23.4
       3     23575650        76.6       30787939        100.0

                                        CUMULATIVE     CUMULATIVE
 ITEM 24.1 FREQUENCY         PERCENT     FREQUENCY       PERCENT
 -----------------------------------------------------------------
     0       795047         2.6         795047          2.6
     1       399468         1.3        1194515          3.9
     2     10624699        34.5       11819214         38.4
     3      3582293        11.6       15401507         50.0
     4       991607         3.2       16393114         53.2
     5       606883         2.0       16999997         55.2
     6      3274482        10.6       20274479         65.9
     7      8651303        28.1       28925782         94.0
     8      1788155         5.8       30713937         99.8
     9        74002         0.2       30787939        100.0

                                       CUMULATIVE      CUMULATIVE
 ITEM 24.2 FREQUENCY        PERCENT     FREQUENCY        PERCENT
 -----------------------------------------------------------------
 FREQUENCY MISSING = 30787939

                                       CUMULATIVE      CUMULATIVE
 ITEM 24.3 FREQUENCY        PERCENT     FREQUENCY        PERCENT
 -----------------------------------------------------------------
     0       254393         3.8         254393          3.8
     2         9918         0.1         264311          4.0
     3      1093346        16.4        1357657         20.4
     5       233603         3.5        1591260         23.9
     6      1673049        25.1        3264309         48.9
     7      2610947        39.1        5875256         88.1
     8       743683        11.1        6618939         99.2
     9        51942         0.8        6670881        100.0
 FREQUENCY MISSING = 24117058

                                       CUMULATIVE      CUMULATIVE
 ITEM 24.4 FREQUENCY        PERCENT     FREQUENCY        PERCENT
 -----------------------------------------------------------------
     0        50730        28.9          50730         28.9
     3        10414         5.9          61144         34.9
     5         1901         1.1          63045         35.9
     6        16373         9.3          79418         45.3
     7        56065        32.0         135483         77.2
     8        39962        22.8         175445        100.0
 FREQUENCY MISSING = 30612494

                                       CUMULATIVE      CUMULATIVE
 ITEM 24.5 FREQUENCY        PERCENT     FREQUENCY        PERCENT
 -----------------------------------------------------------------
     0          762        20.5            762         20.5
     2          192         5.2            954         25.7
     3          261         7.0           1215         32.7
     5          331         8.9           1546         41.6
     7         1973        53.1           3519         94.6
     8          159         4.3           3678         98.9
     9           40         1.1           3718        100.0
 FREQUENCY MISSING = 30784221

                                       CUMULATIVE      CUMULATIVE
 ITEM 24.6 FREQUENCY        PERCENT     FREQUENCY        PERCENT
 -----------------------------------------------------------------
     5          159       100.0            159        100.0
 FREQUENCY MISSING = 30787780

REFERENCES

 1. National Center for Health Statistics:  Development of the design of the
    NCHS Hospital Discharge Survey, by W. R. Simmons.  Vital and Health Stati-
    stics.  PHS Pub. No. 1000, Series 2-No. 39.  Public Health Service.  
    Washington.  U.S. Government Printing Office, Sept. 1970.

 2. SMG Hospital Marketing Group, Inc. 1989.  Hospital Market Database.  Health
    Care Information Specialists, 1342 North LaSalle Drive, Chicago, Chicago,
    Illinois.

 3. National Center for Health Statistics:  International Classification of
    Diseases, 9th Revision, Clinical Modification.  DHHS Pub. No. (PHS) 80-1260.
    Public Health Service.  Washington.  U.S. Government Printing Office, Sept.
    198

 4. Office of the Secretary, Department of Health and Human Services:  Health
    Information Policy Council:  1984 Revision of the Uniform Hospital Discharge
    Data Set.  Federal Register, Volume 50. No. 147. July 31, 1985.

 5. Shah, B.V. 1981.  SESUDAAN:  Standard Errors Program for Computing of
    Standardized Rates from Sample Survey Data.  Research Triangle Institute.
    Research Triangle Park, N.C.




This page last reviewed: Thursday, January 28, 2016
This information is provided as technical reference material. Please contact us at cwus@cdc.gov to request a simple text version of this document.
TOP