Scientific Data Documentation
National Hospital Discharge Survey, 1993
DSN: CC36.NHDS93
1993 NATIONAL HOSPITAL DISCHARGE SURVEY (NHDS)
PUBLIC USE DATA TAPE DOCUMENTATION
Abstract
This material provides documentation for users of the 1993 NHDS Public Use
Data Tape. The NHDS is conducted annually by the National Center for Health
Statistics (NCHS) and is a principal source of information on inpatient
hospital utilization in the United States. Section I describes the survey and
includes information on the history and scope of the NHDS; the methodology
followed, including data collection and medical coding procedures; population
estimates; measurement errors and sampling errors. Section II provides
technical details of the tape including number of tracks and record
length. Section III provides a detailed description of the contents of each
data record, including the coding and location of each data element.
Appendix A defines certain terms used in this document; Appendix
B lists the ICD-9-CM Addenda; Appendix C provides population estimates to
allow the user to calculate rates; and Appendix D provides unweighted and
weighted frequencies for selected descriptive variables.
I. DESCRIPTION OF THE NATIONAL HOSPITAL DISCHARGE SURVEY
Introduction--This document and its appendices contain information
collected by the 1993 National Hospital Discharge Survey. This
survey, conducted by the National Center for Health Statistics,
annually collects medical and demographic information from a
sample of discharge records selected from a national sample of
nonFederal, short-stay hospitals. The data serve as a basis for
calculating statistics on inpatient hospital utilization. For a
description of the survey design and data collection procedures,
see below. For a more detailed description of the survey design,
data collection procedures, and the estimation process, see
Reference 1. Publications based on the data for each survey year
can be obtained from the Government Printing Office.
History--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, in 1962 the
NCHS began exploring possibilities for surveying morbidity in
hospitals. A national advisory group was established. The NCHS
conducted planning discussions with other officials 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 officials of the U.S. Public Health
Service, the NCHS initiated the National Hospital Discharge Survey
in 1964.
SURVEY METHODOLOGY
Source of the Data--The National Hospital Discharge Survey (NHDS)
covers discharges from noninstitutional hospitals, exclusive of
Federal, military, and Veterans Administration 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. These criteria, used from 1988 through the
current survey year, differ slightly from those used prior to 1988.
Beginning with 1988, the NHDS sampling frame consisted of hospitals
that were listed in the April 1987 SMG Hospital Market Tape (2),
met the above criteria, and began accepting patients by August
1987. For 1993 the sample consisted of 528 hospitals. Of the 528
hospitals, 15 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 513 inscope (eligible) hospitals,
466 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 development of the original
NHDS has been published (1).
In 1988, the NHDS was redesigned to provide geographic sampling
comparability with other surveys conducted by 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 1,000
or more beds or 40,000 or more discharges annually. The remaining
sample of hospitals was based on a stratified, three-stage design.
The first stage consisted of selecting 112 primary sampling units
(PSU's) that comprised a probability subsample of PSU's used in the
1985-94 National Health Interview Survey. The second stage
consisted of selecting 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 statistics based on the sample drawn for the new design may be
due to sampling error rather than actual changes in hospital
utilization.
Two data collection procedures were used for the survey. The first
was a manual system of sample selection and data abstraction, used
for approximately 68 percent of the responding hospitals. The
second was an automated method, used for approximately 32 percent
of the respondent hospitals, that involved the purchase of
computerized data tapes from abstracting service organizations,
state data systems, or from the hospitals themselves.
In the manual system, the sample selection and the transcription of
information from the hospital records to abstract forms were
performed at the hospitals. Of the hospitals using this system in
1993, about 55 percent 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. The completed forms, along with sample selection control
sheets, were forwarded to NCHS for coding, editing, and weighting.
For the automated system, NCHS purchased tapes containing machine-readable
medical record data from which records were systematically sampled by NCHS.
The Medical Abstract Form (Figure 1) and the automated data 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
nonsurgical 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--The medical information that was recorded
manually on the sample patient abstracts 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 system currently used
for coding the diagnoses and procedures on the medical abstract
forms as well as on the commercial abstracting services data tapes
is the International Classification of Diseases, 9th Revision,
Clinical Modification, or ICD-9-CM (3). All of the diagnostic and
procedure codes in the ICD-9-CM are utilized. Figure 1. Medical abstract
for the 1993 National Hospital Discharge Survey
NHDS usually presents diagnoses and procedures in the order they
are listed on the abstract form or obtained from abstract services,
however, there are exceptions. For women discharged after a
delivery, a code of V27 from the supplemental classification is
entered as the first-listed code, with a code designating either
normal or abnormal delivery in the second-listed position. In
another exception, a decision was made to reorder some acute
myocardial infarction diagnoses. If an acute myocardial infarction
is listed 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 records. Priority was given to medical
information in the editing decision.
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. Changes go into effect in October of the calendar
year. A list of the changes for 1986 through 1992 are listed in
Appendix B. All coding of the 1993 data is consistent with the
ICD-9-CM and the addendum effective October, 1992. Information
provided by automated systems for the last three months of 1993
which was coded using the October 1993 addendum was converted back
to the previous code assignment. This was done in order to prevent
NHDS data users from mistaking partial year estimates for annual
estimates.
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 defined (4). These items were selected
on the 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 C shows population estimates
provided by the U.S. Bureau of the Census. The estimates are of
the U.S. civilian resident population on July l of the data year.
These population estimates are consistent with those published in
Current Population Reports, Series P-25; however, they 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 one-half of one percent of the discharge records failed
to include the sex of patient. Age or date of birth was available
for all discharges. If the hospital record does not state either
the age or sex of patient, it is imputed by assigning an age or sex
consistent with the age or sex of other sampled patients with the
same diagnostic code. In approximately one percent of the records,
the age or sex was edited, because it was inconsistent with the
diagnosis. Data on race was missing for 19.2 percent of the
discharges, and no attempt was made to impute for these missing
values.
During 1993, 9.7 percent of the records lacked the day of admission
or day of discharge, but included a length of stay and a discharge
month. For records with a length of stay greater than 30 days, a
discharge day of the 20th of the month is assigned to the record
and the admission date is computed based on the given length of
stay. For records with a length of stay 30 days or less, a
discharge day of the 30th of the month is assigned and the
admission date is computed from the length of stay. Other edit and
imputation procedures may have been applied to data in the NHDS
collected in automated form.
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. 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 series approximation of the deviation
of estimates from their expected values. A description of the
software and the approach it uses was published by Shah (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 formula was produced. The curves were
based on an 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)],
expressed as a percent, may be calculated from the formula:
with a and b provided in Table 1.
For example, in 1993 the estimated 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 170,000.
Using the applicable constants from Table 1 for estimates by sex
produces:
RSE(170,000) = 7.42%
The relative standard error for the estimate of interest is 7.42
percent. From this the standard error is obtained by multiplying
the relative standard error by the estimate:
SE(170,000) = 170,000 * 7.42% = 12,614
The standard error can be employed to generate confidence intervals
for statistical testing. In this example, the 95% confidence
interval for the estimate of female inpatients with a first-listed
diagnosis of atherosclerotic heart disease is:
(170,000 - 2*12,614) <-> (170,000 + 2*12,614)
144,772 <-> 195,228
Relative Standard Error for Estimates of Percents
Approximate relative standard errors for estimates of percents may
be calculated from Table 1 also. The relative standard error for
a percent, 100 p (0<p<1), (expressed as a percent), may be
calculated using the formula:
where 100p 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.
For example, in 1993 the estimated number of discharges from short-stay
hospitals which were female was 18,563,000. This is 60.22
percent of the estimated 30,825,000 discharges for that year.
Using the applicable constants from Table 1 for estimates by sex
produces:
RSE(.6022) = 0.299%
The relative standard error for the estimate of interest is 0.299
percent. From this the standard error is obtained by multiplying
the relative standard error by the estimate:
SE(.6022) = .6022 * 0.299% = 0.0018.
The standard error can be employed to generate confidence intervals
for statistical testing. In this example, the 95% confidence
interval for the estimate of the percentage of female inpatients
is:
(.6022 - 2*0.0018) <-> (.6022 + 2*0.0018)
.5986 <-> .6058
or, equivalently, 59.9% <-> 60.6%
Table 1. Parameter values for relative standard errors for
National Hospital Discharge Survey aggregate statistics by
statistic type: United States, 1993
Parameter Estimates for Number of Discharges or First-Listed Diagnoses
Constant a Constant b
TOTAL 0.001294 1082.615
MALE 0.004253 332.843
FEMALE 0.003040 417.946
UNDER 15 YEARS 0.065517 110.056
15-44 YEARS 0.006183 245.201
45-64 YEARS 0.008257 182.876
65 YEARS & OVER 0.004099 314.867
NORTHEAST REGION 0.002821 307.085
MIDWEST REGION 0.006861 660.696
SOUTH REGION 0.002894 543.012
WEST REGION -0.001931 1689.447
WHITE RACE 0.00281 935.083
BLACK RACE 0.005994 284.162
ALL OTHER RACES 0.029679 335.994
RACE NOT STATED 0.010664 1087.208
WORKER'S COMPENSATION 0.037393 343.704
MEDICARE 0.003932 324.078
MEDICAID 0.002945 867.318
PAYMENT NOT STATED 0.039491 444.527
OTHER GOVT PAYMENTS 0.019248 1283.325
PRIVATE INSURANCE 0.001539 2261.692
SELF PAY 0.002776 819.599
NO CHARGE /OTHER PYMTS 0.027821 867.385
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Parameter Estimates for Number of Days of Care
Constant a Constant b
TOTAL 0.001763 1846.934
MALE 0.008520 1037.674
FEMALE 0.007496 2795.394
UNDER 15 YEARS 0.041306 176.591
15-44 YEARS 0.016973 509.236
45-64 YEARS 0.018500 192.754
65 YEARS & OVER 0.010031 1567.29
NORTHEAST REGION 0.005151 1562.49
MIDWEST REGION 0.026122 569.283
SOUTH REGION 0.004855 1462.136
WEST REGION 0.033626 2889.826
WHITE RACE 0.003462 1590.81
BLACK RACE 0.010738 661.233
ALL OTHER RACES 0.072745 348.509
RACE NOT STATED 0.019045 1490.095
WORKER'S COMPENSATION 0.020033 3795.978
MEDICARE 0.004928 1799.284
MEDICAID 0.002729 8939.791
PAYMENT NOT STATED 0.043269 1827.646
OTHER GOVT PAYMENTS 0.019862 11495.000
PRIVATE INSURANCE 0.001260 16794.000
SELF PAY 0.028309 5931.526
NO CHARGE/OTHER 0.025579 9983.000
-----------------------------------------------------------------
Parameter Estimates for Number of All-Listed Diagnoses
Constant a Constant b
TOTAL 0.001672 1076.014
MALE 0.003198 317.725
FEMALE 0.002188 607.621
UNDER 15 YEARS 0.051527 125.423
15-44 YEARS 0.004292 297.759
45-64 YEARS 0.008804 180.459
65 YEARS & OVER 0.002356 12.911
NORTHEAST REGION 0.003894 249.488
MIDWEST REGION 0.007894 497.590
SOUTH REGION 0.003721 723.299
WEST REGION 0.000805 2474.137
WHITE RACE 0.002746 780.935
BLACK RACE 0.006094 278.663
ALL OTHER RACES 0.035098 290.449
RACE NOT STATED 0.012956 1424.873
WORKER'S COMPENSATION 0.021676 1309.058
MEDICARE 0.011341 1334.180
MEDICAID 0.001667 5902.552
PAYMENT NOT STATED 0.041143 994.562
OTHER GOVT PAYMENTS 0.039953 7613.656
PRIVATE INSURANCE 0.002516 20291.000
SELF PAY 0.002736 3514.979
NO CHARGE/OTHER 0.031288 1565.705
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Parameter Estimates for Number of Procedures
Constant a Constant b
TOTAL 0.001781 463.926
MALE 0.006808 273.720
FEMALE 0.003862 636.779
UNDER 15 YEARS 0.037698 110.109
15-44 YEARS 0.008629 304.399
45-64 YEARS 0.005092 127.555
65 YEARS & OVER 0.001763 551.656
NORTHEAST REGION 0.005613 321.543
MIDWEST REGION 0.008477 212.188
SOUTH REGION 0.003733 418.823
WEST REGION 0.008575 1057.077
WHITE RACE 0.003694 440.649
BLACK RACE 0.007315 265.143
ALL OTHER RACES 0.036061 198.400
RACE NOT STATED 0.011670 1190.802
WORKER'S COMPENSATION 0.013748 2049.131
MEDICARE 0.008558 338.428
MEDICAID 0.004417 1627.049
PAYMENT NOT STATED 0.054885 59.909
OTHER GOVT PAYMENTS 0.024174 877.284
PRIVATE INSURANCE 0.002351 5232.749
SELF PAY 0.007905 1760.988
NO CHARGE/OTHER 0.050258 1342.692
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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 following 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 and the relative standard error is
less than 30 percent, the estimate is reported.
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.
Monthly and Seasonal Estimates Under the New Design--An important
difference between the old and new designs is the method used to
adjust for nonresponse. In the old design, weights for responding
hospitals were adjusted each month to account for hospitals that
did not respond for that month. In the new design, the type of
nonresponse adjustment applied depended on whether the hospital was
considered a nonrespondent or partial respondent. A nonresponding
hospital was one which failed to provide at least half of the
expected number of discharges for at least half of the months for
which it was inscope. In this case, weights of discharges from
hospitals similar to the nonresponding hospital were inflated to
account for discharges of the nonrespondent hospital. However,
this adjustment was performed just once, after the close out of the
survey for the year, instead of monthly as before.
For partially responding hospitals, one or both of two adjustments
were made. If the hospital provided at least half, but not all, of
the expected number of abstracts for a given month, the weights of
the abstracts actually collected for that month were inflated to
account for the missing abstracts. If fewer than half of the
expected number of abstracts were provided, the weights of the
abstracts provided were inflated by a factor of two, then a second
adjustment was made to account for the excess nonresponse. In the
second adjustment, the weights of the discharges in the hospital's
respondent months were inflated by ratios that varied by category
of first-listed ICD-9-CM diagnostic code. This adjustment ratio
was based on the hospital's month(s) of nonresponse and the month-by-month
distributions of first-listed diagnostic groups among
discharges from hospitals which responded for all twelve months.
The ratio accounts for the seasonality in the occurrence of the
first-listed diagnostic groups for annual statistics, but not for
partial year estimates. As a result monthly and seasonal estimates
may be skewed. While the effect is believed to be small, it is
recommended that partial year estimates NOT be produced. In the
1993 NHDS, 82.6 percent of the 466 responding hospitals provided
data for all twelve months, and 91.8 percent provided at least 9
months of data.
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 21-25. 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 days of care (tape
location 13-16) and these products are summed. Average length of
stay data can be obtained by dividing the days of care by the
number of discharges as calculated above.
Appendix D contains unweighted and weighted frequencies for
selected descriptive variables on the data tape. These may be used
as a cross-check when processing the data on the user's system.
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.
REFERENCES
1 National Center for Health Statistics: Development of the design
of the NCHS Hospital Discharge Survey, by W. R. Simmons. Vital and
Health Statistics. 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.
Healthcare Information Specialists, 1342 North LaSalle Drive,
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. 1980.
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.
II. TECHNICAL DESCRIPTION OF TAPE
Data Set Name------------------------NHDS.YR1993
Number of Reels--------------------------------1
Number of Recording Tracks---------------------9
Density (bpi)-------------------------------6250
Language----------------------------------EBCDIC
Parity---------------------------------------Odd
Record Length--------------------------------205
Block Size---------------------------------20500
Number of Records------------------------235,411
III. TAPE RECORD FORMAT
This section provides detailed information for each sampled record on the
tape, with a description of each item included in the record. Data elements
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 or from automated sources. The SMG Hospital
Market Tape and the hospital interview are alternate sources of data; some
other items are computer generated.
Item Tape Number of
Number Location Positions Item Description and Codes
1 1-2 2 Survey Year: 93
2 3 1 Newborn Status: 1 = Newborn
2 = Not Newborn
3 4 1 Units for Age: 1 = Years
2 = Months
3 = Days
4 5-6 2 Age in years, months, or days:
If Units = Years: 0-99*
If Units = Months: 01-11
If Units = Days: 00-31
5 7 1 Sex: 1 = Male
2 = Female
6 8 1 Race: 1 = White
2 = Black
3 = American Indian/Eskimo
4 = Asian/Pacific Islander
5 = Other
9 = Not Stated
7 9 1 Marital Status: 1 = Married
2 = Single
3 = Widowed
4 = Divorced
5 = Separated
6 = Unknown
9 = Not Stated
8 10-11 2 Month of Admission:
01-12: January to December
----------------------------------------------------------------------
* Ages 100 and over were recoded to 99.
9 12 1 Discharge Status:
1 = Routine/Discharged Home
2 = Left Against Medical Advice
3 = Discharged/Transferred to
Short-Term Facility
4 = Discharged/Transferred to
Long-Term Care Institution
5 = Alive, Disposition Not Stated
6 = Dead
9 = Not Stated or Not Reported
10 13-16 4 Days of Care:
Use to calculate number of days of care;
Values of zero generated by the computer
from admission and discharge dates were
changed to one. (Discharges for which
dates of admission and discharge are the
same are identified in Item Number 11.)
11 17 1 Length of Stay Flag:
0 = Less than 1 day
1 = 1 day or more
12 18 1 Geographic Region: 1 = Northeast
2 = Midwest
3 = South
4 = West
13 19 1 Number of Beds, Recode:
1 = 6-99
2 = 100-199
3 = 200-299
4 = 300-499
5 = 500 and over
14 20 1 Hospital Ownership: 1 = Proprietary
2 = Government
3 = Nonprofit,
incl. Church
15 21-25 5 Analysis Weight:
Use to obtain weighted estimates
16 26 1 Principal Expected Source of Payment:
0 = No Charge
1 = Workmen's Compensation
2 = Medicare
3 = Medicaid
4 = Other Govt Payments, incl. Title V
5 = Blue Cross
6 = Other Private/Commercial Insurance
7 = Self-Pay
8 = Other
9 = Not Stated
17 27 1 Secondary Expected Source of Payment:
Same coding as item 16
18 28-32 5 Diagnosis Code #1 *
19 33-37 5 Diagnosis Code #2 *
20 38-42 5 Diagnosis Code #3 *
21 43-47 5 Diagnosis Code #4 *
22 48-52 5 Diagnosis Code #5 *
23 53-57 5 Diagnosis Code #6 *
24 58-62 5 Diagnosis Code #7 *
25 63-66 4 Procedure Code #1 *
26 67-70 4 Procedure Code #2 *
27 71-74 4 Procedure Code #3 *
28 75-78 4 Procedure Code #4 *
29 79-81 3 DRG, Grouper Version 10.0
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* Codes are in compliance with the International Classification of Diseases,
9th Revision, Clinical Modification, (ICD-9-CM).
For diagnosis codes, there is an implied decimal between positions 3 and 4.
For E-codes, the implied decimal is between 4 and 5. For inapplicable 4th or
5th digits, a dash is inserted.
For procedure codes, there is an implied decimal between positions 2 and 3.
For inapplicable 3rd or 4th digits, a dash is inserted.
---------------------------------------------------------------------------
If you have any suggestions about how to better provide NHDS data by DRGs to
NHDS data users, please write to Maria Owings, NCHS, Room 956, 6525 Belcrest
Road, Hyattsville, MD 20782. Your assistance is greatly appreciated.
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 6 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 "discharges" 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 1 day (patient admission and
discharge on the same day) is counted as 1 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 diagnoses 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:
Geographic 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
Although the International Classification of Diseases, 9th
Revision, Clinical Modification has been used for coding NHDS data
since 1979, the classification undergoes annual updating.
Assignment of new diagnostic and procedure codes, fourth and fifth
digit expansion of codes, as well as code deletions, are contained
in addenda developed by the ICD-9-CM Coordination and Maintenance
Committee and approved by the Director of NCHS and the Administrator
of the Health Care Financing Administration. Addenda to the
ICD-9-CM become effective on October 1 of the calendar year and
have been released for 1986 through 1993.
As described earlier, the 1993 NHDS involved two data
collection modes: manual and abstract. All data collected
manually were coded using the third edition of the ICD-9-CM, which
includes the addenda for 1986 through 1992. Data collected via
abstract service were coded using two different ICD-9-CM revisions.
For the first 9 months of 1993, the ICD-9-CM including the addendum
of October 1, 1986-92 was used; for the last 3 months the October
1993 addendum was used. Therefore, data provided by automated
systems for the last three months of 1993 was converted back to the
code assignment under the October 1992 addendum. This was done in
order to prevent NHDS data users from mistaking partial year
estimates for annual estimates.
In order to assist users in data retrieval, a conversion table is
provided that shows for each new code, its date of introduction
and the previously assigned code eguivalent, which had been used
for reporting the selected diagnosis or procedure prior to issuance
of the new code.
DIAGNOSIS CODES
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
008.00-008.09 1992 008.0
008.43-008.47 1992 *008.49
008.61-008.69 1992 008.6
041.00-041.09 1992 041.0
041.10-041.19 1992 041.1
041.81-041.89 1992 041.8
042.0-042.9 1986 279.19
043.0-043.9 1986 279.19
044.0-044.9 1986 279.19
070.20-070.21 1991 070.2
070.30-070.31 1991 070.3
070.41-070.49 1991 070.4
070.51-070.59 1991 070.5
088.81,088.89 1989 088.8
099.40-099.49 1992 099.4
099.50-099.59 1992 *078.89
112.84-112.85 1992 *112.89
176.0-176.9 1991 173.0-173.9
203.00 1991 203.0
203.01 1991 V10.79
203.10 1991 203.1
203.11 1991 V10.79
203.80 1991 203.8
203.81 1991 V10.79
204.00 1991 204.0
204.01 1991 V10.61
204.10 1991 204.1
204.11 1991 V10.61
204.20 1991 204.2
204.21 1991 V10.61
204.80 1991 204.8
204.81 1991 V10.61
204.90 1991 204.9
204.91 1991 V10.61
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
205.00 1991 205.0
205.01 1991 V10.62
205.10 1991 205.1
205.11 1991 V10.62
205.20 1991 205.2
205.21 1991 V10.62
205.30 1991 205.3
205.31 1991 V10.62
205.80 1991 205.8
205.81 1991 V10.62
205.90 1991 205.9
205.91 1991 V10.62
206.00 1991 206.0
206.01 1991 V10.63
206.10 1991 206.1
206.11 1991 V10.63
206.20 1991 206.2
206.21 1991 V10.63
206.80 1991 206.8
206.81 1991 V10.63
206.90 1991 206.9
206.91 1991 V10.63
207.00 1991 207.0
207.01 1991 V10.69
207.10 1991 207.1
207.11 1991 V10.69
207.20 1991 207.2
207.21 1991 V10.69
207.80 1991 207.8
207.81 1991 V10.69
208.00 1991 208.0
208.01 1991 V10.60
208.10 1991 208.1
208.11 1991 V10.60
208.20 1991 208.2
208.21 1991 V10.60
208.80 1991 208.8
208.81 1991 V10.60
208.90 1991 208.9
208.91 1991 V10.60
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
237.70-237.72 1990 237.7
320.81-320.89 1992 320.8
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
*346.00-346.02 1992 346.0
346.10-346.11 1992 346.1
346.20-346.21 1992 346.2
346.80-346.81 1992 346.8
346.90-346.91 1992 346.9
371.82 1992 371.89
374.87 1990 374.89
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
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
411.81 1989 410.9
411.89 1989 411.8
429.71 1989 410.0-410.9
429.79 1989 410.0-410.9
437.7 1992 780.9
440.20-440.22 1992 440.2
446.20-446.21,446.29 1990 446.2
482.30-482.39 1992 482.3
482.81-482.89 1992 482.8
483.0 1992 483
483.8 1992 483
491.20-491.21 1991 491.2
493.20 1989 493.90
493.21 1989 493.91
518.81 1987 799.1
518.82-518.89 1987 518.8
524.00-524.09 1992 524.0
524.10-524.19 1992 524.1
524.60-524.69 1991 524.6
524.70-524.79 1992 524.8
535.00-535.01 1991 535.0
535.10-535.11 1991 535.1
535.20-535.21 1991 535.2
535.30-535.31 1991 535.3
535.40-535.41 1991 535.4
535.50-535.51 1991 535.5
535.60-535.61 1991 535.6
537.82 1990 537.89
537.83 1991 537.82
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
562.02 1991 562.00
562.03 1991 562.01
562.12 1991 562.10
562.13 1991 562.11
569.84 1990 557.1
569.85 1991 569.84
*596.51-596.53 1992 596.5
*596.54 1992 *344.61
*596.55-596.59 1992 596.5
599.81-599.89 1992 599.8
645.0 1991 645
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
654.20-654.21,654.23 1990 654.2,654.9
654.90-651.94 1990 654.2,654.9
657.0 1991 657
*659.60,659.61,659.63 1992 *659.80,659.81,659.83
*665.10,665.11 1992 651.10,651.11,651.12,651.14
Note: The title for the subcategory, 665.1 has been changed, making the
fifth-digit subclassicifications, 665.12 and 665.14 invalid.
670.0 1991 670
672.0 1991 672
692.72-692.74 1992 *692.79
692.82-692.83 1992 *692.89
702.0-702.8 1991 702
710.5 1992 * 288.3,729.1
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
738.10-738.19 1992 738.1
753.10-753.17,753.19 1990 753.1
759.81-759.89 1989 759.8
760.75 1991 760.79
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
780.01-780.09 1992 780.0
780.57 1992 * 780.51,780.53
788.30-788.39 1992 788.3
795.8 1986 795.7
864.05 1992 864.09
864.15 1992 864.19
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
996.85 1990 999.8
V07.4 1992 V07.8
V25.43 1992 *V25.49
V25.5 1992 V25.8
*V29.0-V29.8 1992 V71.8
*V29.9 1992 *V71.9
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
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-V39.0l 1989 V39.0
PROCEDURE CODES
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
02.96 1992 89.19
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
29.31 1991 83.02
29.32 1991 29.3
29.33 1991 29.3
29.39 1991 29.3
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
33.6 1990 33.5+37.5
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
36.05 1986 36.01*,36.02
*Before October 1986 contents of current code 36.05 would have
been assigned to 36.0.
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
36.09 1986 36.0
36.09 1991 36.00(Code Deleted)
37.26-37.27 1988 37.29
37.34 1988 37.33
37.70 (Leads Only) 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
37.80-37.87 1992 89.49
(Code Deleted, this
procedure is included in
the code for pacemaker
insertion/replacement)
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
37.94-37.98 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
39.28 1991 39.29
39.65 1988 39.61
39.66 1990 39.65
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
41.00-41.03 1988 41.0
42.25 1988 42.24
42.33 1989 42.32,42.39
42.33 1990 42.91
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 1989 45.31,45.32
45.42 1988 45.41
45.43 1989 45.49
45.75 (Hartmann Resection Added) 1988 48.66 (Code Deleted)
45.95 1987 45.93
46.13 1992 46.12 (Code Deleted)
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
51.22 1991 51.21(Code Deleted),51.22
51.23 1991 51.22
51.64 1989 51.69
51.84-51.88 1989 51.97
51.97 1986 52.91,51.99,or51.82
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
57.22 1989 57.22,57.82
58.31 1990 58.3
58.39 1990 58.3
58.93 1986 57.99
59.96 1986 59.95
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
60.95 1991 60.99
64.97 1986 64.95
66.01 1992 66.0
66.02 1992 66.73
68.15 1987 68.14
68.16 1987 68.13
68.9 1992 68.4
74.3 1992 69.11
(Code Deleted)
77.56 1989 77.89,78.49,81.18
77.57 1989 77.89,80.48,81.18,83.85
77.58 1989 77.59,81.18
78.10 1991 78.40
78.11 1991 78.41
78.12 1991 78.42
78.13 1991 78.43
78.14 1991 78.44
78.15 1991 78.45
78.16 1991 78.46
78.17 1991 78.47
78.18 1991 78.48
78.19 1991 78.49
78.20 1991 78.10,78.20,78,30
78.21 1991 78.11,78.31
78.22 1991 78.12,78.22,78.32
78.23 1991 78.13,78.23,78.33
78.24 1991 78.14,78.34
78.25 1991 78.15,78.25,78.35
78.27 1991 78.17,78.27,78.37
78.28 1991 78.18,78.38
78.29 1991 78.11,78.16,78.19
78.29,78.39
78.39 1991 78.31
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
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 81.61,81.62,81.63,81.64
81.53 1989 8 1 . 5 1 ,
81.59,81.61,81.62,
81.63,81.64
81.54-81.55 1989 81.41
81.56 1989 81.48
81.57 1989 81.31,81.39
81.59 1989 81.39
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
81.97 1992 81.59
85.95 1987 85.99
85.96 1987 85.99
*Codes 78.90-78.99 were retitled as "Insertion of bone growth
stimulator" in October 1987; the previous contents of codes
78.90-78.99 were reassigned to codes 78.40-78.49.
Current Code(s) Effective Previous Code(s)
Assignment October 1 Assignment
86.06 1987 86.09
86.07 1990 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 88.99
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
89.50 1991 89.54
93.90 1988 93.92
94.61-94.69 1989 94.25
96.6 1986 96.35
96.70 199193.92 (Code Deleted)
96.71 199193.92 (Code Deleted)
96.72 199193.92 (Code Deleted)
97.05 1989 51.97
98.51-98.52 1989 59.96 (Code Deleted)
98.59 1989 59.96 (Code Deleted)
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 not transferred elsewhere. In the October 1988 revision,
codes 99.71-99.79 were reclassified as "Therapeutic apheresis."
APPENDIX C
Civilian Population* by Sex, Age, Geographic Region and Race:
United States, July 1, 1993
[Population estimates consistent with Series P-25,
Current Population Reports, U.S. Bureau of the Census]
Age, geographic
region and race Both sexes Male Female
Population in thousands
All ages 256,436 124,592 131,843
Northeast 51,271 24,669 26,602
Midwest 60,959 29,613 31,347
South 88,648 42,768 45,881
West 55,557 27,543 28,014
White 213,621 104,252 109,369
Black 31,888 15,022 16,866
All other 10,927 5,318 5,609
Under 15 years 56,753 29,053 27,700
Under 1 year 3,920 2,003 1,917
1-4 years 15,785 8,075 7,709
5-14 years 37,048 18,975 18,073
Northeast 10,470 5,362 5,108
Midwest 13,514 6,921 6,592
South 19,554 10,000 9,554
West 13,216 6,770 6,445
White 45,115 23,149 21,966
Black 8,815 4,467 4,349
All other 2,823 1,438 1,385
15-44 years 117,341 58,342 58,999
15-24 years 35,456 17,901 17,555
25-34 years 41,342 20,460 20,882
35-44 years 40,543 19,981 20,562
Northeast 23,208 11,501 11,707
Midwest 27,603 13,741 13,863
South 40,443 19,884 20,559
West 26,087 13,216 12,870
White 96,310 48,301 48,008
Black 15,445 7,313 8,132
All other 5,586 2,727 2,859
45-64 years 49,550 23,904 25,646
45-54 years 28,628 13,976 14,652
55-64 years 20,922 9,928 10,994
Northeast 10,393 4,962 5,432
Midwest 11,782 5,709 6,073
South 17,292 8,283 9,009
West 10,082 4,950 5,132
White 42,750 20,833 21,917
Black 4,988 2,224 2,764
All other 1,812 847 965
65 years & over 32,791 13,293 19,498
65-74 years 18,652 8,236 10,417
75-84 years 10,769 4,112 6,657
85 years and over 3,369 946 2,424
Northeast 7,199 2,844 4,354
Midwest 8,060 3,241 4,819
South 11,360 4,601 6,758
West 6,173 2,606 3,566
White 29,447 11,969 17,477
Black 2,639 1,018 1,621
All other 705 306 400
*The NHDS used the civilian noninstitutional 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 1993 rates using the civilian resident
population.
Civilian Population of the United States, July 1, 1993. Estimates by Age, Sex,
and Region Data are consistent with the estimates announced in Census Advisory
CB94-43. Methodology is described in Current Population Report Series P25-1106.
Release date 3/15/94
United States Northeast Midwest
---------------------------------------------------------------------------------------
Age Total Male Female Total Male Female Total Male Female
---------------------------------------------------------------------------------------
All 256,436 124,592 131,843 51,271 24,669 26,602 60,959 29,613 31,347
0-14 56,753 29,053 27,700 10,470 10,000 9,554 13,216 6,770 6,445
0-4 19,705 10,078 9,627 3,699 1,893 1,806 4,485 2,294 2,191
5-9 18,519 9,483 9,036 3,439 1,764 1,676 4,446 2,278 2,168
10-14 18,529 9,492 9,037 3,332 1,705 1,626 4,583 2,350 2,233
15-44 117,341 58,342 58,999 23,208 11,501 11,707 27,603 13,741 13,863
15-19 17,172 8,776 8,396 3,169 1,615 1,554 4,219 2,156 2,063
20-24 18,284 9,125 9,159 3,606 1,798 1,808 4,365 2,177 2,188
25-29 19,317 9,576 9,741 3,884 1,923 1,961 4,404 2,177 2,227
30-34 22,025 10,884 11,141 4,409 2,176 2,233 5,075 2,508 2,567
35-39 21,426 10,577 10,849 4,286 2,112 2,175 5,028 2,495 2,534
40-44 19,117 9,404 9,713 3,854 1,877 1,977 4,512 2,228 2,284
45-64 49,550 23,904 25,646 10,393 4,962 5,432 11,782 5,709 6,073
45-49 15,903 7,792 8,111 3,289 1,590 1,699 3,702 1,817 1,885
50-54 12,725 6,184 6,541 2,655 1,275 1,380 3,035 1,478 1,557
55-59 10,680 5,121 5,559 2,235 1,063 1,172 2,576 1,240 1,336
60-64 10,242 4,807 5,435 2,214 1,033 1,181 2,469 1,174 1,295
65+ 32,791 13,293 19,498 7,199 2,844 4,354 8,060 3,241 4,819
65-69 10,020 4,509 5,511 2,167 964 1,203 2,414 1,103 1,311
70-74 8,632 3,727 4,906 1,897 801 1,096 2,046 877 1,169
75-79 6,501 2,602 3,899 1,437 558 879 1,617 640 978
80-84 4,268 1,509 2,759 944 321 624 1,077 375 702
85+ 3,369 946 2,424 753 200 553 906 247 659
West South
------------------------------------------------------------
Age Total Male Female Total Male Female
------------------------------------------------------------
All 55,557 27,543 28,014 88,648 42,768 45,881
0-14 13,216 6,770 6,445 19,554 10,000 9,554
0-4 4,786 2,449 2,337 6,734 3,442 3,292
5-9 4,273 2,189 2,084 6,361 3,252 3,109
10-14 4,156 2,132 2,024 6,458 3,305 3,153
15-44 26,087 13,216 12,870 40,443 19,884 20,559
15-19 3,687 1,904 1,783 6,097 3,101 2,996
20-24 3,897 2,003 1,893 6,416 3,147 3,269
25-29 4,410 2,241 2,169 6,619 3,235 3,385
30-34 5,043 2,539 2,504 7,498 3,662 3,836
35-39 4,821 2,416 2,405 7,289 3,554 3,736
40-44 4,227 2,112 2,115 6,524 3,186 3,337
45-64 10,082 4,950 5,132 17,292 8,283 9,009
45-49 3,403 1,696 1,708 5,508 2,689 2,820
50-54 2,609 1,293 1,316 4,426 2,139 2,288
55-59 2,112 1,032 1,080 3,757 1,786 1,972
60-64 1,958 929 1,029 3,600 1,670 1,930
65+ 6,173 2,606 3,566 11,360 4,601 6,758
65-69 1,923 871 1,052 3,517 1,571 1,946
70-74 1,659 741 918 3,029 1,307 1,723
75-79 1,221 518 703 2,227 888 1,339
80-84 775 296 479 1,472 518 954
85+ 595 181 414 1,115 318 797
Civilian Population of the United States, July 1, 1993. Estimates by Age, Sex,
and Race (Consistent with the 1990 Census, as enumerated.)
----------------------------------------------------------------------------------------------------
All races White Black Other races
Total Male Female Total Male Female Total Male Female Total Male Female
Age
Civilian population in thousands
---------------------------------------------------------------------------------------------------
Total 256,436 124,592 131,843 213,621 104,252 109,369 31,888 15,022 16,866 10,927 5,318 5,609
0-4 19,705 10,078 9,627 15,584 7,987 7,597 3,130 1,585 1,545 990 506 485
0 3,920 2,003 1,917 3,082 1,578 1,504 627 318 309 210 107 103
1 3,964 2,025 1,938 3,136 1,605 1,531 625 316 308 203 104 99
2 3,981 2,037 1,944 3,157 1,618 1,539 623 316 307 201 102 98
3 3,964 2,029 1,935 3,151 1,616 1,534 623 315 308 191 98 93
4 3,875 1,984 1,891 3,058 1,569 1,489 632 320 312 186 95 91
5-9 18,519 9,483 9,036 14,780 7,585 7,195 2,844 1,442 1,402 896 456 439
5 3,785 1,938 1,847 3,000 1,540 1,461 600 304 296 185 95 90
6 3,727 1,908 1,820 2,977 1,526 1,451 575 292 283 175 90 86
7 3,723 1,906 1,817 2,981 1,530 1,451 565 286 279 178 91 87
8 3,570 1,827 1,743 2,861 1,468 1,393 536 272 264 173 87 85
9 3,714 1,904 1,810 2,962 1,522 1,439 567 288 279 185 94 91
10-14 18,529 9,492 9,037 14,750 7,576 7,174 2,841 1,440 1,402 937 476 462
10 3,809 1,954 1,855 3,041 1,564 1,477 575 292 283 193 98 95
11 3,760 1,925 1,834 3,004 1,543 1,462 570 288 281 186 94 91
12 3,678 1,882 1,796 2,925 1,501 1,424 562 285 278 191 97 95
13 3,719 1,903 1,816 2,955 1,517 1,439 576 291 284 188 95 93
14 3,563 1,827 1,736 2,825 1,452 1,373 558 283 275 179 91 88
15-19 17,172 8,776 8,396 13,685 7,012 6,673 2,649 1,336 1,313 838 427 411
15 3,492 1,792 1,700 2,773 1,427 1,346 546 277 269 173 88 85
16 3,482 1,792 1,690 2,773 1,430 1,343 543 277 266 166 85 81
17 3,403 1,754 1,649 2,713 1,402 1,311 521 266 255 169 87 82
18 3,366 1,715 1,650 2,693 1,376 1,317 513 258 256 159 81 78
19 3,429 1,723 1,706 2,732 1,378 1,355 526 260 267 171 86 85
20-24 18,284 9,125 9,159 14,752 7,404 7,348 2,594 1,247 1,346 938 473 465
20 3,465 1,734 1,731 2,761 1,388 1,373 529 259 271 175 88 87
21 3,596 1,797 1,799 2,874 1,442 1,432 535 260 275 187 95 92
22 3,767 1,875 1,892 3,042 1,522 1,520 531 254 276 194 98 96
23 3,740 1,865 1,875 3,040 1,526 1,514 509 242 267 191 97 94
24 3,716 1,854 1,862 3,035 1,527 1,508 490 232 258 191 96 96
25-29 19,317 9,576 9,741 15,755 7,887 7,869 2,608 1,223 1,385 954 467 487
25 3,624 1,805 1,820 2,943 1,479 1,464 495 233 262 186 93 93
26 3,681 1,822 1,859 3,002 1,499 1,502 497 233 264 182 89 93
27 3,807 1,887 1,920 3,095 1,549 1,546 522 245 277 190 93 97
28 3,823 1,890 1,933 3,135 1,565 1,570 506 237 269 182 88 94
29 4,381 2,173 2,208 3,580 1,794 1,786 587 275 312 214 104 110
30-34 22,025 10,884 11,141 18,219 9,104 9,115 2,769 1,280 1,489 1,037 500 537
30 4,364 2,157 2,207 3,594 1,796 1,799 560 260 300 209 101 108
31 4,353 2,151 2,201 3,601 1,799 1,802 549 255 295 202 98 105
32 4,388 2,165 2,222 3,637 1,815 1,821 541 249 292 210 101 108
33 4,409 2,173 2,236 3,656 1,823 1,833 549 252 296 204 98 107
34 4,512 2,237 2,275 3,731 1,872 1,860 569 263 306 212 102 109
35-39 21,426 10,577 10,849 17,834 8,901 8,933 2,620 1,212 1,408 971 464 507
35 4,488 2,221 2,267 3,728 1,864 1,864 553 257 296 207 100 107
36 4,380 2,163 2,217 3,650 1,822 1,828 536 247 289 194 93 101
37 4,258 2,097 2,161 3,534 1,760 1,774 526 242 284 198 94 104
38 3,982 1,960 2,022 3,323 1,655 1,668 480 220 259 179 84 94
39 4,318 2,137 2,182 3,599 1,800 1,799 526 245 281 193 92 101
40-44 19,117 9,404 9,713 16,064 7,994 8,071 2,205 1,015 1,190 848 396 452
40 4,076 2,006 2,069 3,416 1,701 1,715 474 218 256 185 87 98
41 3,908 1,921 1,987 3,288 1,636 1,652 449 205 244 171 80 91
42 3,734 1,835 1,900 3,132 1,557 1,575 434 199 235 168 79 89
43 3,670 1,799 1,871 3,069 1,523 1,546 429 197 232 172 79 93
44 3,729 1,843 1,886 3,158 1,577 1,581 419 195 223 152 71 81
45-49 15,903 7,792 8,111 13,633 6,747 6,886 1,626 740 886 644 305 340
45 3,640 1,790 1,850 3,106 1,543 1,562 385 177 208 149 69 80
46 3,798 1,868 1,931 3,306 1,642 1,664 355 162 193 137 64 73
47 2,784 1,358 1,426 2,357 1,162 1,195 298 134 164 129 62 68
48 2,710 1,321 1,389 2,325 1,145 1,180 275 124 151 111 52 58
49 2,971 1,455 1,515 2,539 1,255 1,284 313 143 169 119 57 62
50-54 12,725 6,184 6,541 10,952 5,373 5,579 1,297 583 714 475 227 248
50 3,042 1,487 1,556 2,642 1,303 1,340 291 132 159 110 53 57
51 2,563 1,248 1,316 2,200 1,081 1,119 266 120 146 97 46 51
52 2,422 1,176 1,246 2,084 1,022 1,063 245 110 135 93 44 48
53 2,346 1,137 1,209 2,011 984 1,027 248 111 137 88 42 46
54 2,351 1,137 1,214 2,015 984 1,031 247 111 137 88 42 46
55-59 10,680 5,121 5,559 9,225 4,470 4,755 1,081 476 605 375 175 199
55 2,249 1,082 1,166 1,921 933 988 244 109 135 84 40 44
56 2,169 1,040 1,128 1,873 909 964 219 95 124 76 36 40
57 2,169 1,039 1,131 1,870 905 965 223 98 125 76 36 40
58 2,055 983 1,072 1,796 869 928 192 84 108 66 31 36
59 2,039 976 1,063 1,765 854 911 202 90 113 72 33 39
60-64 10,242 4,807 5,435 8,940 4,243 4,697 984 424 560 318 140 178
60 2,000 940 1,060 1,730 822 908 202 88 114 68 30 38
61 1,980 933 1,047 1,727 824 903 191 82 109 62 28 35
62 2,061 966 1,095 1,797 852 946 199 86 114 65 29 36
63 2,090 988 1,102 1,838 878 959 191 82 108 61 27 34
64 2,111 980 1,131 1,848 867 981 201 87 114 62 26 35
65-69 10,020 4,509 5,511 8,865 4,019 4,847 891 377 514 264 113 150
65 2,122 975 1,147 1,859 863 996 204 87 117 59 25 34
66 2,036 924 1,112 1,794 819 975 188 82 106 54 23 31
67 1,989 895 1,095 1,754 796 958 183 76 107 52 22 30
68 1,942 864 1,078 1,731 774 956 162 69 93 49 21 28
69 1,932 851 1,080 1,728 766 962 155 64 91 49 21 27
70-74 8,632 3,727 4,906 7,740 3,360 4,380 695 279 416 197 88 110
70 1,853 813 1,040 1,650 728 922 156 64 93 47 22 26
71 1,854 809 1,045 1,665 731 934 147 59 88 42 19 23
72 1,798 785 1,013 1,617 710 907 139 56 83 42 19 23
73 1,605 682 922 1,440 616 825 130 52 78 35 15 20
74 1,522 637 885 1,369 576 793 122 48 74 31 13 18
75-79 6,501 2,602 3,899 5,879 2,364 3,515 499 185 314 123 54 70
75 1,440 593 847 1,300 538 762 113 44 69 28 12 16
76 1,354 554 800 1,229 506 723 100 38 62 25 11 14
77 1,290 518 772 1,170 472 697 95 35 60 25 11 14
78 1,257 492 765 1,138 448 690 95 34 62 23 10 13
79 1,161 445 715 1,043 401 642 95 34 61 22 10 12
80-84 4,268 1,509 2,759 3,886 1,372 2,514 312 106 206 71 31 39
80 1,044 387 657 946 351 594 80 28 53 18 8 10
81 928 338 590 848 308 540 65 23 42 15 7 8
82 841 294 546 767 268 498 61 20 40 14 6 8
83 769 262 507 701 238 463 56 19 37 12 5 7
84 686 228 458 625 206 419 50 16 33 11 5 6
85+ 3,369 946 2,424 3,076 855 2,221 243 71 172 50 20 30
0-14 56,753 29,053 27,700 45,115 23,149 21,966 8,815 4,467 4,349 2,823 1,438 1,385
15-44 117,341 58,342 58,999 96,310 48,301 48,008 15,445 7,313 8,132 5,586 2,727 2,859
45-64 49,550 23,904 25,646 42,750 20,833 21,917 4,988 2,224 2,764 1,812 847 965
15+ 199,683 95,539 104,144 168,506 81,104 87,403 23,072 10,555 12,517 8,104 3,880 4,224
45+ 82,341 37,197 45,144 72,197 32,802 39,394 7,627 3,242 4,385 2,517 1,153 1,364
65+ 32,791 13,293 19,498 29,447 11,969 17,477 2,639 1,018 1,621 705 306 400
75+ 14,139 5,057 9,081 12,841 4,591 8,250 1,053 362 692 244 105 139
APPENDIX D
1. UNWEIGHTED FREQUENCIES FOR SELECTED VARIABLES: NEWBORN INFANTS
SURVEY YEAR
Cumulative Cumulative
Frequency Percent Frequency Percent
--------------------------------------------------
93 25003 100.0 25003 100.0
UNITS FOR AGE
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------------------------------
3 25003 100.0 25003 100.0
SEX OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------
1 12920 51.7 12920 51.7
2 12083 48.3 25003 100.0
RACE OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
--------------------------------------------------
1 13621 54.5 13621 54.5
2 3726 14.9 17347 69.4
3 121 0.5 17468 69.9
4 948 3.8 18416 73.7
5 2061 8.2 20477 81.9
9 4526 18.1 25003 100.0
MARITAL STATUS OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-----------------------------------------------------
2 25003 100.0 25003 100.0
DISCHARGE STATUS
Cumulative Cumulative
Frequency Percent Frequency Percent
------------------------------------------------
1 24070 96.3 24070 96.3
2 12 0.0 24082 96.3
3 329 1.3 24411 97.6
4 26 0.1 24437 97.7
5 228 0.9 24665 98.6
6 96 0.4 24761 99.0
9 242 1.0 25003 100.0
CENSUS REGION FOR HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
----------------------------------------------------
1 5747 23.0 5747 23.0
2 6259 25.0 12006 48.0
3 8711 34.8 20717 82.9
4 4286 17.1 25003 100.0
BEDSIZE CLASSIFICATION FOR HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-----------------------------------------------------
1 2748 11.0 2748 11.0
2 4978 19.9 7726 30.9
3 6503 26.0 14229 56.9
4 6965 27.9 21194 84.8
5 3809 15.2 25003 100.0
OWNERSHIP OF HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-----------------------------------------------------
1 2715 10.9 2715 10.9
2 2405 9.6 5120 20.5
3 19883 79.5 25003 100.0
PRINCIPAL EXPECTED SOURCE OF PAYMENT
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------------------------------
0 96 0.4 96 0.4
2 95 0.4 191 0.8
3 8429 33.7 8620 34.5
4 396 1.6 9016 36.1
5 3303 13.2 12319 49.3
6 9163 36.6 21482 85.9
7 1856 7.4 23338 93.3
8 1117 4.5 24455 97.8
9 548 2.2 25003 100.0
SECONDARY EXPECTED SOURCE OF PAYMENT
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------------------------------
0 2 0.1 2 0.1
3 156 8.9 158 9.0
4 74 4.2 232 13.2
5 63 3.6 295 16.8
6 146 8.3 441 25.1
7 867 49.3 1308 74.4
8 449 25.6 1757 100.0
Frequency Missing = 23246
2. WEIGHTED FREQUENCIES FOR SELECTED VARIABLES: NEWBORN INFANTS
SURVEY YEAR
Cumulative Cumulative
Frequency Percent Frequency Percent
--------------------------------------------------
93 3578666 100.0 3578666 100.0
UNITS FOR AGE
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------------------------------
3 3578666 100.0 3578666 100.0
SEX OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------
1 1823043 50.9 1823043 50.9
2 1755623 49.1 3578666 100.0
RACE OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
--------------------------------------------------
1 2056657 57.5 2056657 57.5
2 439955 12.3 2496612 69.8
3 20589 0.6 2517201 70.3
4 106826 3.0 2624027 73.3
5 191094 5.3 2815121 78.7
9 763545 21.3 3578666 100.0
MARITAL STATUS OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-----------------------------------------------------
2 3578666 100.0 3578666 100.0
DISCHARGE STATUS
Cumulative Cumulative
Frequency Percent Frequency Percent
------------------------------------------------
1 3419972 95.6 3419972 95.6
2 1756 0.0 3421728 95.6
3 44224 1.2 3465952 96.9
4 2266 0.1 3468218 96.9
5 43352 1.2 3511570 98.1
6 11333 0.3 3522903 98.4
9 55763 1.6 3578666 100.0
CENSUS REGION FOR HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
----------------------------------------------------
1 689268 19.3 689268 19.3
2 793118 22.2 1482386 41.4
3 1289740 36.0 2772126 77.5
4 806540 22.5 3578666 100.0
BEDSIZE CLASSIFICATION FOR HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-----------------------------------------------------
1 617192 17.2 617192 17.2
2 770368 21.5 1387560 38.8
3 746027 20.8 2133587 59.6
4 982885 27.5 3116472 87.1
5 462194 12.9 3578666 100.0
OWNERSHIP OF HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-----------------------------------------------------
1 468347 13.1 468347 13.1
2 471486 13.2 939833 26.3
3 2638833 73.7 3578666 100.0
PRINCIPAL EXPECTED SOURCE OF PAYMENT
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------------------------------
0 19301 0.5 19301 0.5
2 30581 0.9 49882 1.4
3 1130402 31.6 1180284 33.0
4 89375 2.5 1269659 35.5
5 398125 11.1 1667784 46.6
6 1379357 38.5 3047141 85.1
7 254413 7.1 3301554 92.2
8 159287 4.5 3460841 96.7
9 117825 3.3 3578666 100.0
SECONDARY EXPECTED SOURCE OF PAYMENT
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------------------------------
0 316 0.2 316 0.2
3 35073 17.1 35389 17.3
4 8296 4.0 43685 21.3
5 11113 5.4 54798 26.7
6 18392 9.0 73190 35.7
7 74446 36.3 147636 72.0
8 57705 28.1 205341 100.0
Frequency Missing = 3373325
3. UNWEIGHTED FREQUENCIES FOR SELECTED VARIABLES: NON-NEWBORNS
SURVEY YEAR
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
93 210408 100.0 210408 100.0
UNITS FOR AGE
Cumulative Cumulative
Frequency Percent Frequency Percent
--------------------------------------------------------
1 205439 97.6 205439 97.6
2 3466 1.6 208905 99.3
3 1503 0.7 210408 100.0
SEX OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 83601 39.7 83601 39.7
2 126807 60.3 210408 100.0
RACE OF DISCHARGED
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 129737 61.7 129737 61.7
2 27859 13.2 157596 74.9
3 623 0.3 158219 75.2
4 3883 1.8 162102 77.0
5 7668 3.6 169770 80.7
9 40638 19.3 210408 100.0
MARITAL STATUS OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 35831 17.0 35831 17.0
2 29596 14.1 65427 31.1
3 10852 5.2 76279 36.3
4 4334 2.1 80613 38.3
5 1033 0.5 81646 38.8
6 23956 11.4 105602 50.2
9 104806 49.8 210408 100.0
DISCHARGE STATUS
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 170833 81.2 170833 81.2
2 2145 1.0 172978 82.2
3 5332 2.5 178310 84.7
4 13216 6.3 191526 91.0
5 10190 4.8 201716 95.9
6 6203 2.9 207919 98.9
9 2489 1.2 210408 100.0
CENSUS REGION FOR HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 57169 27.2 57169 27.2
2 56784 27.0 113953 54.2
3 72347 34.4 186300 88.5
4 24108 11.5 210408 100.0
BEDSIZE CLASSIFICATION FOR HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 27316 13.0 27316 13.0
2 37352 17.8 64668 30.7
3 53963 25.6 118631 56.4
4 62635 29.8 181266 86.1
5 29142 13.9 210408 100.0
OWNERSHIP OF HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 25144 12.0 25144 12.0
2 19927 9.5 45071 21.5
3 165337 78.6 210408 100.0
PRINCIPAL EXPECTED SOURCE OF PAYMENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
0 904 0.4 904 0.4
1 2777 1.3 3681 1.7
2 76003 36.1 79684 37.8
3 31990 15.2 111674 53.0
4 2939 1.4 114613 54.4
5 21792 10.4 136405 64.8
6 54092 25.7 190497 90.5
7 10321 4.9 200818 95.4
8 5594 2.7 206412 98.1
9 3996 1.9 210408 100.0
SECONDARY EXPECTED SOURCE OF PAYMENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
0 34 0.1 34 0.1
2 43 0.1 77 0.2
3 5962 14.9 6039 15.1
4 538 1.3 6577 16.4
5 9703 24.3 16280 40.7
6 13380 33.5 29660 74.2
7 5827 14.6 35487 88.8
8 4495 11.2 39982 100.0
Frequency Missing = 170426
4. WEIGHTED FREQUENCIES FOR SELECTED VARIABLES: NON-NEWBORNS
SURVEY YEAR
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------------------------------------
93 30825148 100.0 30825148 100.0
UNIT FOR AGE
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 30114704 97.7 30114704 97.7
2 488447 1.6 30603151 99.3
3 221997 0.7 30825148 100.0
SEX OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency P
Frequency Percent Frequency Percent
-------------------------------------------------------
1 12262445 39.8 12262445 39.8
2 18562703 60.2 30825148 100.0
RACE OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 20101017 65.2 20101017 65.2
2 3659646 11.9 23760663 77.1
3 113918 0.4 23874581 77.5
4 480132 1.6 24354713 79.0
5 658611 2.1 25013324 81.1
9 5811824 18.9 30825148 100.0
MARITAL STATUS OF DISCHARGED PATIENT
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 9274698 30.1 9274698 30.1
2 5855328 19.0 15130026 49.1
3 2915257 9.5 18045283 58.5
4 1140558 3.7 19185841 62.2
5 225020 0.7 19410861 63.0
6 2328291 7.6 21739152 70.6
9 9085996 29.5 30825148 100.0
DISCHARGE STATUS
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 25131675 81.5 25131675 81.5
2 269602 0.9 25401277 82.4
3 956859 3.1 26358136 85.5
4 1866109 6.1 28224245 91.6
5 1207594 3.9 29431839 95.5
6 844412 2.7 30276251 98.2
9 548897 1.8 30825148 100.0
CENSUS REGION FOR HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 6964731 22.6 6964731 22.6
2 7097084 23.0 14061815 45.6
3 11580414 37.6 25642229 83.2
4 5182919 16.8 30825148 100.0
BEDSIZE CLASSIFICATION FOR HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-------------------------------------------------------
1 6204477 20.1 6204477 20.1
2 7391842 24.0 13596319 44.1
3 6386830 20.7 19983149 64.8
4 7361449 23.9 27344598 88.7
5 3480550 11.3 30825148 100.0
OWNERSHIP OF HOSPITAL
Cumulative Cumulative
Frequency Percent Frequency Percent
-----------------------------------------------------
1 3344553 10.9 3344553 10.9
2 3698234 12.0 7042787 22.9
3 23782361 77.2 30825148 100.0
PRINCIPAL EXPECTED SOURCE OF PAYMENT
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------------------------------
0 123559 0.4 123559 0.4
1 387938 1.3 511497 1.7
2 11657089 37.8 12168586 39.5
3 4530519 14.7 16699105 54.2
4 545761 1.8 17244866 55.9
5 2700341 8.8 19945207 64.7
6 7748178 25.1 27693385 89.8
7 1504793 4.9 29198178 94.7
8 925447 3.0 30123625 97.7
9 701523 2.3 30825148 100.0
SECONDARY EXPECTED SOURCE OF PAYMENT
Cumulative Cumulative
Frequency Percent Frequency Percent
---------------------------
0 3933 0.1 3933 0.1
2 12232 0.2 16165 0.3
3 1317666 19.0 1333831 19.3
4 144430 2.1 1478261 21.4
5 1658471 23.9 3136732 45.3
6 2710129 39.0 5846861 84.3
7 558461 8.0 6405322 92.3
8 541902 7.8 6947224 100.0
Frequency Missing = 23877924
