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Scientific Data Documentation
National Hospital Discharge Survey, 1992
DSN: CC36.NHDS92 ABSTRACT 1992 NATIONAL HOSPITAL DISCHARGE SURVEY (NHDS) PUBLIC USE DATA TAPE DOCUMENTATION This material provides documentation for users of the NHDS Public Use Data Tapes. The NHDS is conducted annually by the National Center for Health Statis- tics (NCHS) and is the principal source of information on impatient 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 frequen- cies for selected descriptive variables. Description of the NHDS I. DESCRIPTION OF THE NATIONAL HOSPITAL DISCHARGE SURVEY Introduction: This document and its appendices contain information for users of the 1992 National Hospital Discharge Survey Public Use Data Tape. This survey, conducted annually by National Center for Health Statistics, collects medical and demographic info. from a sample of hospital discharge records. It is the basis for calculating statistics on inpatient hospital utilization in the United States. For a description of the survey design and data procedures, see below. For a more detailed description of the survey design, data collection procedures, and the estimation process, see Reference l. Publications based on the data for each survey year can be obtained from the Government Printing Office. For information or questions about publications, contact the Data Dissemnation Branch, NCHS, 301-436-8500. 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, the NCHS in l962 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 l963, 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 l964 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, an elements of the U.S. Public Health Service, the NCHS initiated the National Hospital Discharge Survey in l964. SURVEY METHODOLOGY 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. 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 1992 the sample consisted of 528 hospitals. Of the 528 hospitals, 14 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 514 inscope (eligible) hospitals, 494 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 was 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 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 66 percent of the responding hospitals. The second was an automated method, used for approximately 34 percent of the respondent hospitals, that involved the purchase of computerized data tapes from abstracting service organizations, state data systems, or hospitals. 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 1992, about 58 percent had the work perfo 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 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 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. 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 second-listed code with a code designating either normal or complicated delivery in the first-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. Figure 1. Medical abstract for the l992 National Hospital Discharge Survey 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. Changes go into effect on October 1 of the calendar year. A list of the changes for 1986 through 1991 appears in Appendix B. All coding of the 1992 data is consistent with the ICD-9-CM and the addendum effective October 1, 1991. Information provided by automated systems three months of 1992 which was coded using the October 1992 addendum was converted back to the previous code assignment. This was done in order to provide consistency and allow correct annual estimation. 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 abst 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, these tables are not official population estimates of the 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 birth was available for all records. If the hospital record did not state the patient, it was imputed by assigning the patient 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 25 percent of the records, and no attempt was made to impute for these missing values. During 1992, ten 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 was assigned to the record and the admission date was computed based on the given length of stay. For records with a length of stay or less, a discharge day of the 30th of the month was assigned and the admission date was 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 of an estimate 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 an estimate is obtained by dividing the standard error by the estimate itself. The resulting value is multiplied by 100, so 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: RSE(X) = 100 a+b/X with a and b provided in Table 1. For example, in 1992 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 130,000. Using the applicable constants from Table 1 for estimates by sex produces: RSE(130,000) = 100 .00089 + 404.530 / 130,000 RSE(133,000) = 6.33% The relative standard error for the estimate of interest is 6.33 percent. From this the standard error is obtained by multiplying the relative standard error by the estimate: 130,000 * 6.33% = 8,229 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: (130,000 - 8,229) <-> (130,000 + 8,229) 121,771 <-> 138,229 Table 1. Parameter values for relative standard errors for National Hospital Discharge Survey aggregate statistics by statistic type: United States, 1992 NUMBER OF DISCHARGES OR FIRST-LISTED DIAGNOSES Constant a Constant b Total 0.00097 449.059 Sex Male 0.00377 355.244 Female 0.00089 404.530 Age Under 15 years 0.06075 81.775 15-44 years 0.01291 44.505 45-64 years 0.00656 147.706 65 years and over 0.00175 464.831 Region Northeast 0.00275 277.031 Midwest 0.00358 296.767 South 0.00375 464.132 West 0.00006 1168.044 Source of Payment Worker's compensation 0.00515 294.690 Medicare 0.00903 398.793 Medicaid 0.00180 1343.134 Not stated 0.11386 3464.679 Other Government 0.05453 746.774 Private 0.00131 1438.292 Self 0.00340 756.736 No charge/other 0.02170 528.001 Race White 0.00241 419.274 Black 0.00740 363.901 All other 0.02271 182.649 Not stated 0.01496 301.892 ALL-LISTED DIAGNOSES Constant a Constant b Total 0.00109 522.555 Sex Male 0.00337 270.306 Female 0.00100 427.561 Age Under 15 years 0.05545 74.719 15-44 years 0.00691 114.487 45-64 years 0.00701 130.811 65 years and over 0.00011 723.890 Region Northeast 0.00502 346.947 Midwest 0.00478 1594.237 South 0.00476 467.704 West 0.00010 1614.334 Source of Payment Worker's compensation 0.00369 1659.858 Medicare 0.01151 1891.797 Medicaid 0.00144 9741.000 Not stated 0.07015 7089.800 Other Government 0.04779 4107.199 Private 0.00377 15682.000 Self 0.00437 1981.113 No charge/other 0.02299 1257.851 Race White 0.00260 482.914 Black 0.00543 397.312 All other 0.02601 231.603 Not stated 0.01449 914.057 ALL-LISTED PROCEDURES Constant a Constant b Total 0.00143 377.158 Sex Male 0.00465 336.276 Female 0.00124 416.841 Age Under 15 years 0.10248 74.715 15-44 years 0.00903 153.675 45-64 years 0.00494 295.564 65 years and over 0.00986 288.155 Region Northeast 0.00556 166.484 Midwest 0.00587 240.949 South 0.00298 430.632 West 0.00831 735.033 Source of Payment Worker's compensation 0.01445 2263.365 Medicare 0.00654 702.706 Medicaid 0.00263 2720.177 Not stated 0.18533 3807.025 Other Government 0.08664 606.397 Private 0.00210 2294.972 Self 0.00713 1071.297 No charge/other 0.02185 921.546 Race White 0.00314 404.253 Black 0.00705 287.323 All other 0.02977 150.761 Not stated 0.01695 230.278 DAYS OF CARE Constant a Constant b Total 0.00150 2671.104 Sex Male 0.00823 995.275 Female 0.00149 1914.510 Age Under 15 years 0.12836 71.171 15-44 years 0.02014 222.396 45-64 years 0.01746 151.920 65 years and over 0.01680 456.313 Region Northeast 0.00489 2079.029 Midwest 0.00557 1297.946 South 0.00457 1148.825 West 0.02108 1902.219 Source of Payment Worker's compensation 0.00773 2510.311 Medicare 0.01205 2940.060 Medicaid 0.00071 29011.000 Not stated 0.03570 14944.000 Other Government 0.03381 5357.217 Private 0.00093 22065.000 Self 0.00534 5073.313 No charge/other 0.01889 7453.201 Race White 0.00365 1422.804 Black 0.01826 1176.619 All other 0.04065 263.783 Not stated 0.01615 1443.019 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: RSE(p) = 100 b(1 - p)/(pX) 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. For example, in 1992 the estimated number of discharges from short-stay hospitals which were female was 18,545,000. This is 59.9 percent of the estimated 30,951,000 discharges for that year. Using the applicable constants from Table 1 for estimates by sex produces: RSE(.599) = 100 404.530 * (1 - .599) / (.599 * 30,951,000) RSE(.599) = 0.296% The relative standard error for the estimate of interest is 0.296 percent. From this the standard error is obtained by multiplying the relative standard error by the estimate: S(.599) = .599 * 0.296% = 0.00177. The standard error can be employed to generate confidence intervals for statistical testing. In this example, the 68% confidence interval for the estimate of the percentage of female inpatients is: (.599 - 0.00177) <-> (.599 + 0.00177) .5972 <-> .6008 or, equivalently, 59.7% <-> 60.1% 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 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. 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 lll-ll5. 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 l0l-l04) and these products are summed. Length of stay data can be obtained by using recodes already on the tape (see items l4 and 18 in the tape layout), or by dividing days of care by 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. 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 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 1992 NHDS, 87 percent of the 494 responding hospitals provided data for all twelve months, and 91 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. 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. l000, Series 2-No. 39. Public Health Service. Washington. U.S. Government Printing Office, Sept. l970. 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-l260. Public Health Service. Washington. U.S. Government Printing Office, Sept. l980. 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. TECHNICAL DESCRIPTION OF TAPE Number of Reels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .l Number of Recording Tracks . . . . . . . . . . . . . . . . . . . . . . . .9 Density (bpi). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6250 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EBCDIC Parity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Odd Record Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205 Block Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,500 Number of Records. . . . . . . . . . . . . . . . . . . . . . . . . .274,273 RECORD LAYOUT 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. NATIONAL HOSPITAL DISCHARGE SURVEY l992 OUTLINE OF ITEMS AND CODES ARRANGED BY LOCATION IN THE FINAL MEDICAL TAPE RECORD Item Tape Number of Number Location Positions Item Description and Codes 1-2 2 Blank 1 3 l Discharge Status Recode 1: Alive 2: Dead 3: Not Stated 4-29 26 Blank 2 30-33 4 Age Units Number (Location 33)(Location 30-32) 1: Years 001-124 2: Months 001-011 3: Days 000-031 3 34 1 Sex 1: Male 2: Female 35 1 Blank 4 36 1 Marital Status 1: Married 2: Single 3: Widowed 4: Divorced 5: Separated 6: Not Stated 7: Unknown 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 1: 1991 2: 1992 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 2: 1992 3: 1993 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 Item Tape Number of 48 1 Blank 8 49 1 Age Recode 1: Less than 15 Years 2: 15-44 Years 3: 45-64 Years 4: 65 Years and Over 9 50 1 Number of Diagnostic Codes Recorded 1 - Minimum 7 - Maximum 10 51 1 Number of Surgical Codes Recorded 0 - Minimum 4 - Maximum 11 52-56 5 Date of Surgery #3 11.1 52-53 2 Month of Surgery 01-12 11.2 54-55 2 Day of Surgery 01-31 11.3 56 1 Year of Surgery 1: 1991 2: 1992 3: 1993 12 57-61 5 Date of Surgery #4 Same format as above (52-56) 62-77 16 Blank 13 78-81 4 Length of Stay in Days This item was generated by the computer on the basis of date of admission and date of discharge. 14 82-83 2 Length of Stay Recode #1 (Computer Generated) 00: 00 Days 01: 01 Days - - - - - - 31: 31 Days and Over 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 16 86 1 Race 1: White 2: Black 3: American Indian/Eskimo/Aleut 4: Asian/Pacific Islander 5: Other 6: Not Stated 17 87 1 Marital Status Recode (Computer Generated) 1: Married 2: Not Married 3: Not Stated 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 2 Blank 19 91 1 Geographic Region 1: Northeast 2: Midwest 3: South 4: West 92-98 7 Blank 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 21 100 1 Hospital Ownership (Interview) 1: Proprietary 2: Government 3: Not for profit 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 6 Blank 23 111-115 5 Weight Final Adjusted Weight (whole number) (see pg. 14 How to Use Data Tape) 116-130 15 Blank 24 131-136 6 Expected Source(s) of Payment 24.1 131 1 Principal 24.2 132 1 Other 24.3 133 1 Secondary 24.4 134 1 Secondary Code for Source of Payment 1: Worker's Compensation 2: Medicare 3: Medicaid 4: Not Stated 5: Other Government Payments 6: Blue Cross 7: Other Private/Commercial Insurance 8: Self-Pay 9: No Charge 0: Other 25 137-141 5 Date of Surgery #1 Same format as above (52-56) 26 142-146 5 Date of Surgery #2 Same format as above (52-56) 147-148 2 Blank 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 28 184-199 16 Surgical Codes** (Four-Digit Codes) 28.1 184-187 4 Procedure No. 1 28.2 188-191 4 Procedure No. 2 28.3 192-195 4 Procedure No. 3 28.4 196-199 4 Procedure No. 4 200 l Blank 29 201-203 3 DRGs - - Grouper Version 9.0 If you have any suggestions about how to better provide NHDS data by DRGs to NHDS data users, please write to Maria Owings, NCHS, Presidential Bldg. Room 952-956, 6525 Belcrest Road, Hyattsville, MD 20782. Your assistance is greatly appreciated. **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 procedure code. All coding is consistent with the ICD-9-CM and the addendum effective as of October 1991. For the last three months of the data year, coding which was based on the October 1992 addendum was converted back to the previous code assignment. This was done in order to provide consistency and allow correct annual estimation. APPENDICES 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 or 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 resident 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 i 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 resident 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 proce 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 resident 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 ICD-9-CM ADDENDA Since 1979, the International Classification of Diseases, 9th Revision, Clinical Modification, has been used for coding NHDS data. However, since 1986, this classification system has undergone 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 1992. As described earlier, the 1992 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 1991. Data collected via abstract service were coded using two different ICD-9-CM revisions. For the first 9 months of 1992, the ICD-9-CM with the addenda of October 1, 1986-91 was used; for the last 3 months the October 1 addendum was used. Therefore, data provided by automated systems for the last three months of 1992 were converted back to the code assignment under the October 1991 addendum. This was done in order to provide consistency and allow correct annual estimation. 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 equivalent, which had been used for reporting the selected diagnosis or procedure prior to issuance of the new code. Diagnosis Codes DIAGNOSIS CODES Current Code(s) Effective Previous 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 279.19 070.20-070.21 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 088.8 176.0-176.9 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 V10.61 205.00 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 V10.60 237.70-237.72 1990 237.7 345.00-345.01 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 345.9 374.87 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 410.9 411.81 1989 410.9 411.89 1989 411.8 429.71 1989 410.0-410.9 429.79 1989 410.0-410.9 446.20-446.21,446.29 1990 446.2 491.20-491.21 1991 491.2 493.20 1989 493.90 493.21 1989 493.91 518.81 1987 799.1 518.82-518.89 1987 518.8 524.60-524.69 1991 524.6 535.00-535.01 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 537.82 562.02 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 569.84 645.0 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 657 670.0 1991 670 672.0 1991 672 702.0-702.8 1991 702 753.10-753.17,753.19 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 765.1 795.8 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 996.8 996.85 1990 999.8 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-V39.0l 1989 V39.0 PROCEDURE CODES Current Code(s) Effective Previous 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 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 36.09 1991 36.00 (Code Deleted) 36.09 1986 36.0 *Before October 1986 contents of current code 36.05 would have been assigned to 36.0. 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 (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 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 1988 48.66 (Code Deleted) (Hartmann Resection 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 51.9 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, 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 57.22 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 60.95 1991 60.99 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 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 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 81.51,81.59,81.61,81.62, 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 85.95 1987 85.99 85.96 1987 85.99 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 *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. 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 1991 93.92 (Code Deleted) 96.71 1991 93.92 (Code Deleted) 96.72 1991 93.92 (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 l, l992 (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 253,497 123,081 130,416 Northeast 51,026 24,533 26,494 Midwest 60,586 29,410 31,176 South 87,299 42,088 45,211 West 54,586 27,051 27,535 White 211,686 103,236 108,451 Black 31,326 14,732 16,594 All other 10,485 5,114 5,372 Under 15 years 55,962 28,653 27,309 Under 1 year 3,984 2,039 1,945 1-4 years 15,528 7,947 7,581 5-14 years 36,450 18,667 17,783 Northeast 10,361 5,307 5,054 Midwest 13,422 6,875 6,547 South 19,251 9,846 9,404 West 12,929 6,624 6,304 White 44,581 22,883 21,698 Black 8,663 4,385 4,277 All other 2,719 1,385 1,334 Age, geographic region and race Both sexes Male Female Population in thousands 15-44 years 116,946 58,110 58,836 15-24 years 35,500 17,915 17,586 25-34 years 41,842 20,699 21,143 35-44 years 39,604 19,496 20,108 Northeast 23,342 11,561 11,782 Midwest 27,641 13,750 13,892 South 40,106 19,705 20,401 West 25,856 13,094 12,762 White 96,310 48,273 48,037 Black 15,231 7,192 8,039 All other 5,406 2,645 2,761 45-64 years 48,304 23,274 25,031 45-54 years 27,379 13,362 14,017 55-64 years 20,926 9,912 11,014 Northeast 10,198 4,862 5,335 Midwest 11,561 5,596 5,965 South 16,787 8,030 8,757 West 9,758 4,786 4,972 White 41,772 20,325 21,446 Black 4,835 2,154 2,681 All other 1,698 794 903 Age, geographic region and race Both sexes Male Female Population in thousands 65 years and over 32,285 13,045 19,240 65-74 years 18,461 8,125 10,336 75-84 years 10,565 4,010 6,555 85 years and over 3,259 909 2,349 Northeast 7,125 2,803 4,323 Midwest 7,962 3,189 4,773 South 11,155 4,506 6,648 West 6,043 2,546 3,496 White 29,024 11,754 17,269 Black 2,598 1,001 1,597 All other 663 289 374 *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 1992 rates using the civilian resident population. Civilian population of the United States by age, sex, and region: July 1, 1992 Estimates in thousands ----------------------------------------------------------------------------- U.S. Northeast Midwest Age Total Male Female Total Male Female Total Male Female ------------------------------------------------------------------------------ All 253,497 123,081 130,416 51,026 24,533 26,494 60,586 29,410 31,176 0-14 55,962 28,653 27,309 10,361 5,307 5,054 13,422 6,875 6,547 0-4 19,512 9,986 9,526 3,702 1,896 1,806 4,493 2,299 2,193 5-9 18,349 9,396 8,954 3,387 1,736 1,650 4,441 2,276 2,166 10-14 18,100 9,271 8,829 3,272 1,675 1,598 4,488 2,300 2,187 15-44 116,946 58,110 58,836 23,342 11,561 11,782 27,641 13,750 13,892 15-19 16,962 8,663 8,299 3,166 1,612 1,554 4,160 2,125 2,035 20-24 18,538 9,251 9,287 3,737 1,863 1,874 4,427 2,207 2,220 25-29 19,841 9,834 10,007 4,009 1,985 2,024 4,550 2,248 2,301 30-34 22,001 10,865 11,136 4,435 2,187 2,248 5,136 2,537 2,600 35-39 20,899 10,301 10,598 4,192 2,062 2,130 4,937 2,446 2,491 40-44 18,705 9,195 9,510 3,803 1,851 1,952 4,430 2,186 2,244 45-64 48,304 23,274 25,031 10,198 4,862 5,335 11,561 5,596 5,965 45-49 15,329 7,510 7,819 3,193 1,544 1,649 3,589 1,761 1,828 50-54 12,050 5,852 6,198 2,511 1,205 1,306 2,895 1,409 1,486 55-59 10,485 5,021 5,464 2,212 1,050 1,161 2,538 1,220 1,317 60-64 10,440 4,890 5,550 2,283 1,063 1,220 2,539 1,205 1,334 65+ 32,285 13,045 19,240 7,125 2,803 4,323 7,962 3,189 4,773 65-69 9,977 4,475 5,503 2,173 962 1,211 2,403 1,092 1,312 70-74 8,483 3,651 4,833 1,874 788 1,086 2,030 867 1,163 75-79 6,415 2,553 3,862 1,422 548 874 1,595 628 967 80-84 4,150 1,457 2,693 922 310 612 1,052 363 689 85+ 3,259 909 2,349 734 194 540 881 239 642 ----------------------------------------------------------------------------- South West Age Total Male Female Total Male Female ----------------------------------------------------------------------------- All 87,299 42,088 45,211 54,586 27,051 27,535 0-14 19,251 9,846 9,404 12,929 6,624 6,304 0-4 6,633 3,393 3,241 4,684 2,398 2,286 5-9 6,305 3,224 3,082 4,216 2,160 2,056 10-14 6,312 3,230 3,082 4,028 2,066 1,962 15-44 40,106 19,705 20,401 25,856 13,094 12,762 15-19 6,018 3,058 2,959 3,619 1,868 1,750 20-24 6,423 3,149 3,274 3,950 2,032 1,919 25-29 6,782 3,314 3,468 4,501 2,287 2,214 30-34 7,441 3,632 3,809 4,988 2,509 2,479 35-39 7,077 3,445 3,632 4,692 2,348 2,345 40-44 6,366 3,107 3,258 4,106 2,050 2,056 45-64 16,787 8,030 8,757 9,758 4,785 4,973 45-49 5,288 2,581 2,707 3,258 1,624 1,635 50-54 4,185 2,021 2,165 2,459 1,218 1,241 55-59 3,678 1,746 1,933 2,058 1,005 1,053 60-64 3,636 1,683 1,953 1,983 939 1,043 65+ 11,155 4,506 6,648 6,043 2,546 3,496 65-69 3,490 1,554 1,935 1,911 867 1,045 70-74 2,961 1,273 1,688 1,617 722 896 75-79 2,205 874 1,331 1,193 503 690 80-84 1,430 501 928 747 283 464 85+ 1,070 304 766 574 173 401 Civilian Population of the United States, July 1, 1992 Estimates, by age, sex, and race ---------------------------------------------------------------------- Age All races White Total Male Female Total Male Female ---------------------------------------------------------------------- Civilian Population in thousands Total 253,497 123,081 130,416 211,686 103,236 108,451 0-4 19,512 9,986 9,526 15,454 7,928 7,526 0 3,984 2,039 1,945 3,140 1,611 1,529 1 3,978 2,036 1,943 3,157 1,619 1,538 2 3,959 2,027 1,932 3,146 1,614 1,532 3 3,813 1,951 1,861 3,016 1,547 1,469 4 3,778 1,933 1,845 2,995 1,536 1,459 5-9 18,349 9,396 8,954 14,688 7,538 7,150 5 3,722 1,906 1,816 2,967 1,523 1,445 6 3,705 1,897 1,808 2,973 1,525 1,448 7 3,697 1,891 1,805 2,967 1,522 1,445 8 3,450 1,766 1,684 2,764 1,419 1,346 9 3,776 1,936 1,840 3,017 1,550 1,467 10-14 18,100 9,271 8,829 14,438 7,416 7,022 10 3,795 1,946 1,849 3,035 1,560 1,474 11 3,665 1,877 1,788 2,934 1,507 1,427 12 3,670 1,878 1,792 2,917 1,497 1,420 13 3,526 1,804 1,722 2,807 1,441 1,367 14 3,443 1,765 1,678 2,746 1,412 1,335 15-19 16,962 8,663 8,299 13,532 6,929 6,603 15 3,448 1,769 1,679 2,741 1,410 1,331 16 3,317 1,707 1,610 2,649 1,366 1,283 17 3,437 1,773 1,664 2,749 1,420 1,328 18 3,273 1,666 1,607 2,615 1,335 1,280 19 3,487 1,748 1,739 2,777 1,398 1,379 20-24 18,538 9,251 9,287 15,032 7,546 7,486 20 3,652 1,823 1,830 2,929 1,468 1,462 21 3,860 1,923 1,937 3,110 1,555 1,555 22 3,759 1,877 1,882 3,064 1,539 1,525 23 3,621 1,809 1,812 2,960 1,490 1,471 24 3,645 1,819 1,826 2,969 1,495 1,474 25-29 19,841 9,834 10,00 716,256 8,133 8,123 25 3,684 1,833 1,851 3,009 1,510 1,498 26 3,762 1,862 1,900 3,064 1,530 1,534 27 4,015 1,990 2,025 3,289 1,646 1,643 28 3,947 1,952 1,995 3,257 1,626 1,631 29 4,433 2,198 2,235 3,637 1,821 1,816 30-34 22,001 10,865 11,136 18,264 9,121 9,143 30 4,426 2,188 2,238 3,667 1,832 1,835 31 4,346 2,144 2,202 3,607 1,800 1,808 32 4,398 2,172 2,226 3,647 1,822 1,826 33 4,328 2,128 2,200 3,601 1,792 1,809 34 4,503 2,233 2,270 3,741 1,875 1,866 35-39 20,899 10,301 10,598 17,448 8,698 8,750 35 4,456 2,204 2,252 3,708 1,853 1,855 36 4,194 2,064 2,130 3,497 1,741 1,756 37 4,206 2,073 2,133 3,504 1,747 1,757 38 3,861 1,895 1,966 3,239 1,608 1,631 39 4,181 2,065 2,116 3,500 1,748 1,751 40-44 18,705 9,195 9,510 15,777 7,845 7,932 40 3,983 1,961 2,022 3,350 1,669 1,681 41 3,730 1,830 1,900 3,128 1,553 1,574 42 3,694 1,816 1,878 3,105 1,544 1,562 43 3,583 1,752 1,831 3,019 1,494 1,526 44 3,715 1,836 1,878 3,174 1,585 1,590 45-49 15,329 7,510 7,819 13,197 6,528 6,669 45 3,899 1,922 1,977 3,389 1,686 1,703 46 2,751 1,346 1,405 2,349 1,161 1,187 47 2,845 1,389 1,456 2,417 1,192 1,225 48 2,707 1,319 1,388 2,339 1,150 1,189 49 3,126 1,535 1,591 2,703 1,338 1,365 50-54 12,050 5,852 6,198 10,348 5,073 5,275 50 2,660 1,297 1,363 2,281 1,123 1,159 51 2,434 1,185 1,250 2,093 1,028 1,065 52 2,327 1,130 1,197 1,996 978 1,018 53 2,315 1,121 1,194 1,993 974 1,019 54 2,313 1,119 1,195 1,985 969 1,015 55-59 10,485 5,021 5,464 9,072 4,390 4,682 55 2,137 1,027 1,110 1,830 888 942 56 2,160 1,035 1,125 1,868 906 962 57 2,205 1,057 1,148 1,912 926 986 58 1,927 921 1,006 1,681 812 870 59 2,057 981 1,076 1,780 858 922 60-64 10,440 4,890 5,550 9,154 4,335 4,820 60 2,026 949 1,077 1,764 835 929 61 2,075 977 1,098 1,819 866 953 62 2,085 981 1,103 1,824 869 956 63 2,081 976 1,104 1,835 870 965 64 2,175 1,007 1,168 1,913 895 1,018 65-69 9,977 4,475 5,503 8,847 3,994 4,853 65 2,085 951 1,135 1,830 842 988 66 2,020 913 1,108 1,782 810 972 67 2,034 914 1,120 1,808 819 989 68 1,931 859 1,072 1,727 773 953 69 1,907 838 1,069 1,701 750 951 70-74 8,483 3,651 4,833 7,621 3,298 4,323 70 1,905 837 1,068 1,705 754 951 71 1,837 802 1,034 1,650 725 925 72 1,698 735 962 1,522 663 860 73 1,561 660 901 1,406 598 809 74 1,483 616 867 1,338 559 779 75-79 6,415 2,553 3,862 5,798 2,317 3,481 75 1,419 584 834 1,281 530 751 76 1,344 548 796 1,222 500 721 77 1,283 511 772 1,162 465 697 78 1,221 474 748 1,104 431 673 79 1,147 436 712 1,029 390 638 80-84 4,150 1,457 2,693 3,783 1,325 2,458 80 996 369 627 907 336 571 81 907 324 583 825 294 531 82 820 287 534 747 260 487 83 752 256 496 689 233 455 84 676 223 453 615 201 414 85+ 3,259 909 2,349 2,975 821 2,154 0-14 55,962 28,653 27,309 44,581 22,883 21,698 15-44 116,946 58,110 58,836 96,310 48,273 48,037 45-64 48,304 23,274 25,031 41,772 20,325 21,446 15+19 7,535 94,428 103,107 167,105 80,353 86,753 45+ 80,589 36,319 44,271 70,795 32,080 38,716 65+ 32,285 13,045 19,240 29,024 11,754 17,269 75+ 13,824 4,920 8,904 12,556 4,463 8,093 ---------------------------------------------------------------------- Age Black Other races Total Male Female Total Male Female ---------------------------------------------------------------------- Total 31,326 14,732 16,594 10,485 5,114 5,372 0-4 3,099 1,568 1,531 959 490 468 0 640 324 316 204 104 100 1 623 315 308 198 102 97 2 623 316 307 190 97 93 3 613 310 303 184 94 90 4 601 304 297 182 93 89 5-9 2,782 1,410 1,372 880 448 432 5 579 293 286 176 90 86 6 557 283 275 175 89 86 7 555 281 275 174 88 86 8 516 262 255 169 86 84 9 574 291 282 186 94 91 10-14 2,782 1,408 1,374 880 447 433 10 577 293 284 183 93 90 11 552 279 273 180 92 89 12 575 291 284 179 90 89 13 546 276 270 173 88 85 14 532 269 263 165 84 81 15-19 2,619 1,319 1,300 811 415 396 15 544 276 268 163 84 80 16 509 259 250 159 82 77 17 524 267 256 165 85 79 18 503 252 251 155 79 76 19 540 265 275 170 86 84 20-24 2,585 1,237 1,349 921 468 453 20 546 265 281 177 90 87 21 555 268 288 195 100 95 22 507 242 265 188 96 92 23 481 228 253 180 91 88 24 496 233 263 181 91 90 25-29 2,641 1,236 1,405 945 465 480 25 496 233 263 179 89 90 26 516 242 274 182 90 92 27 536 251 285 190 93 97 28 509 237 272 181 88 93 29 584 273 311 213 104 109 30-34 2,736 1,261 1,475 1,000 483 517 30 561 260 301 198 96 101 31 536 247 289 202 97 105 32 549 253 296 202 98 105 33 533 243 289 194 93 101 34 558 258 299 204 99 105 35-39 2,525 1,163 1,362 925 439 485 35 551 256 295 197 95 102 36 510 234 276 187 89 98 37 515 236 278 187 89 98 38 455 209 246 167 78 88 39 496 229 266 186 88 98 40-44 2,124 976 1,148 804 375 429 40 463 212 251 170 80 90 41 434 198 236 168 79 90 42 427 197 231 161 75 86 43 402 184 218 161 74 87 44 397 185 212 143 67 77 45-49 1,538 700 838 594 282 312 45 372 171 201 139 65 74 46 283 128 155 120 57 63 47 307 139 168 121 58 63 48 266 120 146 102 48 53 49 310 142 168 113 54 58 50-54 1,256 565 691 446 215 232 50 279 126 153 100 48 52 51 249 112 137 93 45 48 52 243 110 134 87 42 45 53 240 107 133 82 40 43 54 245 110 135 84 40 44 55-59 1,059 467 592 354 165 190 55 228 102 127 78 37 41 56 219 95 124 72 34 38 57 221 97 124 72 34 38 58 184 81 102 62 28 34 59 207 91 116 70 31 38 60-64 982 423 560 304 133 170 60 199 86 113 63 28 35 61 194 83 111 62 27 34 62 199 86 113 62 27 35 63 188 81 107 58 25 33 64 202 87 115 59 25 34 65-69 878 371 507 252 110 143 65 199 84 115 56 24 32 66 187 81 105 52 22 30 67 177 74 103 50 21 28 68 158 65 92 47 21 26 69 158 67 92 48 21 27 70-74 681 273 409 182 80 101 70 157 63 93 44 20 24 71 147 59 88 40 18 22 72 138 56 82 38 17 21 73 123 49 74 32 13 18 74 117 46 71 28 12 16 75-79 499 184 315 118 52 66 75 111 43 68 27 11 15 76 98 37 60 25 11 14 77 97 35 62 24 11 13 78 96 34 62 22 10 12 79 98 36 62 21 10 11 80-84 302 103 199 65 29 36 80 72 26 46 17 8 9 81 67 23 44 14 6 8 82 61 21 40 13 6 7 83 51 17 34 11 5 6 84 50 16 34 11 5 6 85+ 238 70 168 46 18 28 0-14 8,663 4,385 4,277 2,719 1,385 1,334 15-44 15,231 7,192 8,039 5,406 2,645 2,761 45-64 4,835 2,154 2,681 1,698 794 903 15+19 22,663 10,347 12,317 7,767 3,729 4,038 45+ 7,432 3,155 4,278 2,361 1,084 1,277 65+ 2,598 1,001 1,597 663 289 374 75+ 1,039 358 681 229 99 130 Appendix D 1. UNWEIGHTED FREQUENCIES FOR NEWBORN INFANT DATA (Defined as Column 84-85 Equal to 00 ) RECODED DISCHARGE STATUS, COL 3 CUMULATIVE CUMULATIVE ITEM 1 FREQUENCY PERCENT FREQUENCY PERCENT 1 27666 99.1 27666 99.1 2 97 0.3 27763 99.5 3 142 0.5 27905 100.0 UNITS IN WHICH AGE IS GIVEN, COL 33 CUMULATIVE CUMULATIVE UNITS FREQUENCY PERCENT FREQUENCY PERCENT 3 27905 100.0 27905 100.0 SEX, CUMULATIVE CUMULATIVE ITEM 3 FREQUENCY PERCENT FREQUENCY PERCENT 1 14486 51.9 14486 51.9 2 13419 48.1 27905 100.0 MARITAL STATUS, COL 36 CUMULATIVE CUMULATIVE ITEM 4 FREQUENCY PERCENT FREQUENCY PERCENT 2 27905 100.0 27905 100.0 DISCHARGE STATUS, COL 47 CUMULATIVE CUMULATIVE ITEM 7 FREQUENCY PERCENT FREQUENCY PERCENT 1 26780 96.0 26780 96.0 2 6 0.0 26786 96.0 3 436 1.6 27222 97.6 4 79 0.3 27301 97.8 5 365 1.3 27666 99.1 6 97 0.3 27763 99.5 7 142 0.5 27905 100.0 AGE RECODED INTO 4 GROUPS, COL 49 CUMULATIVE CUMULATIVE ITEM 8 FREQUENCY PERCENT FREQUENCY PERCENT 1 27905 100.0 27905 100.0 NUMBER OF DIAGNOSES, COL 50 CUMULATIVE CUMULATIVE ITEM 9 FREQUENCY PERCENT FREQUENCY PERCENT 1 16048 57.5 16048 57.5 2 6938 24.9 22986 82.4 3 2536 9.1 25522 91.5 4 1167 4.2 26689 95.6 5 680 2.4 27369 98.1 6 194 0.7 27563 98.8 7 342 1.2 27905 100.0 NUMBER OF PROCEDURES, COL 51 CUMULATIVE CUMULATIVE ITEM 10 FREQUENCY PERCENT FREQUENCY PERCENT 0 16487 59.1 16487 59.1 1 9534 34.2 26021 93.2 2 975 3.5 26996 96.7 3 420 1.5 27416 98.2 4 489 1.8 27905 100.0 AGE RECODED INTO 10-YR GRPS, COL 84-85 CUMULATIVE CUMULATIVE ITEM 15 FREQUENCY PERCENT FREQUENCY PERCENT 00 27905 100.0 27905 100.0 RACE, CUMULATIVE CUMULATIVE ITEM 16 FREQUENCY PERCENT FREQUENCY PERCENT 1 15013 53.8 15013 53.8 2 3991 14.3 19004 68.1 3 268 1.0 19272 69.1 4 1110 4.0 20382 73.0 5 1478 5.3 21860 78.3 6 6045 21.7 27905 100.0 MARITAL STATUS, RECODED, COL 87 CUMULATIVE CUMULATIVE ITEM 17 FREQUENCY PERCENT FREQUENCY PERCENT 2 27905 100.0 27905 100.0 LOS RECODED TO 5 CATEGORIES, COL 88 CUMULATIVE CUMULATIVE ITEM 18 FREQUENCY PERCENT FREQUENCY PERCENT 1 26525 95.1 26525 95.1 2 696 2.5 27221 97.5 3 224 0.8 27445 98.4 4 116 0.4 27561 98.8 5 344 1.2 27905 100.0 REGION, CUMULATIVE CUMULATIVE ITEM 19 FREQUENCY PERCENT FREQUENCY PERCENT 1 5787 20.7 5787 20.7 2 6435 23.1 12222 43.8 3 9933 35.6 22155 79.4 4 5750 20.6 27905 100.0 BEDSIZE CATEGORY, COL 99 CUMULATIVE CUMULATIVE ITEM 20 FREQUENCY PERCENT FREQUENCY PERCENT 1 2499 9.0 2499 9.0 2 5505 19.7 8004 28.7 3 5826 20.9 13830 49.6 4 9720 34.8 23550 84.4 5 4355 15.6 27905 100.0 HOSPITAL OWNERSHIP, COL 100 CUMULATIVE CUMULATIVE ITEM 21 FREQUENCY PERCENT FREQUENCY PERCENT 1 2646 9.5 2646 9.5 2 3155 11.3 24750 88.7 3 22104 79.2 27905 100.0 PRINCIPAL EXP SOURCE OF PAYMENT, COL 131 CUMULATIVE CUMULATIVE ITEM 24.1 FREQUENCY PERCENT FREQUENCY PERCENT 0 1479 5.3 1479 5.3 2 137 0.5 1616 5.8 3 7456 26.7 9072 32.5 4 3404 12.2 12476 44.7 5 478 1.7 12954 46.4 6 2992 10.7 15946 57.1 7 9693 34.7 25639 91.9 8 2238 8.0 27877 99.9 9 28 0.1 27905 100.0 EXP SOURCE OF PAYMENT, COL 132 CUMULATIVE CUMULATIVE ITEM 24.2 FREQUENCY PERCENT FREQUENCY PERCENT Frequency Missing = 27905 SECONDARY EXP SOURCE OF PAYMENT, COL 133 CUMULATIVE CUMULATIVE ITEM 24.3 FREQUENCY PERCENT FREQUENCY PERCENT 0 468 21.9 468 21.9 3 135 6.3 603 28.2 5 152 7.1 755 35.3 6 65 3.0 820 38.3 7 219 10.2 1039 48.6 8 1038 48.5 2077 97.1 9 62 2.9 2139 100.0 Frequency Missing = 25766 SECONDARY EXP SOURCE OF PAYMENT, COL 134 CUMULATIVE CUMULATIVE ITEM 24.4 FREQUENCY PERCENT FREQUENCY PERCENT 8 3 100.0 3 100.0 Frequency Missing = 27902 2. UNWEIGHTED FREQUENCIES FOR NON-NEWBORN DATA (Defined as Column 84-85 Not Equal to 00) RECODED DISCHARGE STATUS, COL 3 CUMULATIVE CUMULATIVE ITEM 1 FREQUENCY PERCENT FREQUENCY PERCENT 1 237571 96.4 237571 96.4 2 6988 2.8 244559 99.3 3 1809 0.7 246368 100.0 UNITS IN WHICH AGE IS GIVEN, COL 33 CUMULATIVE CUMULATIVE UNITS FREQUENCY PERCENT FREQUENCY PERCENT 1 238260 96.7 238260 96.7 2 5633 2.3 243893 99.0 3 2475 1.0 246368 100.0 SEX, CUMULATIVE CUMULATIVE ITEM 3 FREQUENCY PERCENT FREQUENCY PERCENT 1 100203 40.7 100203 40.7 2 146165 59.3 246368 100.0 MARITAL STATUS, COL 36 CUMULATIVE CUMULATIVE ITEM 4 FREQUENCY PERCENT FREQUENCY PERCENT 1 42649 17.3 42649 17.3 2 40073 16.3 82722 33.6 3 13181 5.4 95903 38.9 4 4628 1.9 100531 40.8 5 969 0.4 101500 41.2 6 92803 37.7 194303 78.9 7 52065 21.1 246368 100.0 DISCHARGE STATUS, COL 47 CUMULATIVE CUMULATIVE ITEM 7 FREQUENCY PERCENT FREQUENCY PERCENT 1 205665 83.5 205665 83.5 2 2159 0.9 207824 84.4 3 6069 2.5 213893 86.8 4 13106 5.3 226999 92.1 5 10572 4.3 237571 96.4 6 6988 2.8 244559 99.3 7 1809 0.7 246368 100.0 AGE RECODED INTO 4 GROUPS, COL 49 CUMULATIVE CUMULATIVE ITEM 8 FREQUENCY PERCENT FREQUENCY PERCENT 1 25346 10.3 25346 10.3 2 87478 35.5 112824 45.8 3 49032 19.9 161856 65.7 4 84512 34.3 246368 100.0 NUMBER OF DIAGNOSES, COL 50 CUMULATIVE CUMULATIVE ITEM 9 FREQUENCY PERCENT FREQUENCY PERCENT 1 41270 16.8 41270 16.8 2 51961 21.1 93231 37.8 3 39964 16.2 133195 54.1 4 34925 14.2 168120 68.2 5 34705 14.1 202825 82.3 6 15686 6.4 218511 88.7 7 27857 11.3 246368 100.0 NUMBER OF PROCEDURES, COL 51 CUMULATIVE CUMULATIVE ITEM 10 FREQUENCY PERCENT FREQUENCY PERCENT 0 75227 30.5 75227 30.5 1 67404 27.4 142631 57.9 2 43816 17.8 186447 75.7 3 32242 13.1 218689 88.8 4 27679 11.2 246368 100.0 AGE RECODED INTO 10-YR GRPS, COL 84-85 CUMULATIVE CUMULATIVE ITEM 15 FREQUENCY PERCENT FREQUENCY PERCENT 01 8108 3.3 8108 3.3 02 8122 3.3 16230 6.6 03 9116 3.7 25346 10.3 04 24372 9.9 49718 20.2 05 36639 14.9 86357 35.1 06 26467 10.7 112824 45.8 07 22979 9.3 135803 55.1 08 26053 10.6 161856 65.7 09 37977 15.4 199833 81.1 10 46535 18.9 246368 100.0 RACE, CUMULATIVE CUMULATIVE ITEM 16 FREQUENCY PERCENT FREQUENCY PERCENT 1 141711 57.5 141711 57.5 2 30023 12.2 171734 69.7 3 951 0.4 172685 70.1 4 4363 1.8 177048 71.9 5 5849 2.4 182897 74.2 6 63471 25.8 246368 100.0 MARITAL STATUS, RECODED, COL 87 CUMULATIVE CUMULATIVE ITEM 17 FREQUENCY PERCENT FREQUENCY PERCENT 1 43618 17.7 43618 17.7 2 57882 23.5 101500 41.2 3 144868 58.8 246368 100.0 LOS RECODED TO 5 CATEGORIES, COL 88 CUMULATIVE CUMULATIVE ITEM 18 FREQUENCY PERCENT FREQUENCY PERCENT 1 187143 76.0 187143 76.0 2 37697 15.3 224840 91.3 3 11006 4.5 235846 95.7 4 4673 1.9 240519 97.6 5 5849 2.4 246368 100.0 REGION, CUMULATIVE CUMULATIVE ITEM 19 FREQUENCY PERCENT FREQUENCY PERCENT 1 60771 24.7 60771 24.7 2 63516 25.8 124287 50.4 3 91501 37.1 215788 87.6 4 30580 12.4 246368 100.0 BEDSIZE CATEGORY, COL 99 CUMULATIVE CUMULATIVE ITEM 20 FREQUENCY PERCENT FREQUENCY PERCENT 1 24217 9.8 24217 9.8 2 49446 20.1 73663 29.9 3 55950 22.7 129613 52.6 4 83185 33.8 212798 86.4 5 33570 13.6 246368 100.0 HOSPITAL OWNERSHIP, COL 100 CUMULATIVE CUMULATIVE ITEM 21 FREQUENCY PERCENT FREQUENCY PERCENT 1 28233 11.5 28233 11.5 2 23308 9.5 223060 90.5 3 194827 79.1 246368 100.0 PRINCIPAL EXP SOURCE OF PAYMENT, COL 131 CUMULATIVE CUMULATIVE ITEM 24.1 FREQUENCY PERCENT FREQUENCY PERCENT 0 9216 3.7 9216 3.7 1 3050 1.2 12266 5.0 2 83137 33.7 95403 38.7 3 34038 13.8 129441 52.5 4 13499 5.5 142940 58.0 5 3268 1.3 146208 59.3 6 23578 9.6 169786 68.9 7 60462 24.5 230248 93.5 8 15266 6.2 245514 99.7 9 854 0.3 246368 100.0 EXP SOURCE OF PAYMENT, COL 132 CUMULATIVE CUMULATIVE ITEM 24.2 FREQUENCY PERCENT FREQUENCY PERCENT Frequency Missing = 246368 SECONDARY EXP SOURCE OF PAYMENT, COL 133 CUMULATIVE CUMULATIVE ITEM 24.3 FREQUENCY PERCENT FREQUENCY PERCENT 0 5070 9.9 5070 9.9 2 41 0.1 5111 10.0 3 7653 15.0 12764 25.0 5 761 1.5 13525 26.5 6 9455 18.5 22980 45.0 7 19625 38.4 42605 83.5 8 7853 15.4 50458 98.9 9 585 1.1 51043 100.0 Frequency Missing = 195325 SECONDARY EXP SOURCE OF PAYMENT, COL 134 CUMULATIVE CUMULATIVE ITEM 24.4 FREQUENCY PERCENT FREQUENCY PERCENT 0 307 33.6 307 33.6 3 149 16.3 456 49.9 5 15 1.6 471 51.5 6 65 7.1 536 58.6 7 215 23.5 751 82.2 8 163 17.8 914 100.0 Frequency Missing = 245454 3. WEIGHTED FREQUENCIES FOR NEWBORN INFANT DATA (Defined as Column 84-85 Equal to 00) RECODED DISCHARGE STATUS, COL 3 CUMULATIVE CUMULATIVE ITEM 1 FREQUENCY PERCENT FREQUENCY PERCENT 1 3645897 98.8 3645897 98.8 2 11002 0.3 3656899 99.1 3 31614 0.9 3688513 100.0 UNITS IN WHICH AGE IS GIVEN, COL 33 CUMULATIVE CUMULATIVE UNITS FREQUENCY PERCENT FREQUENCY PERCENT 3 3688513 100.0 3688513 100.0 SEX, CUMULATIVE CUMULATIVE ITEM 3 FREQUENCY PERCENT FREQUENCY PERCENT 1 1926108 52.2 1926108 52.2 2 1762405 47.8 3688513 100.0 MARITAL STATUS, COL 36 CUMULATIVE CUMULATIVE ITEM 4 FREQUENCY PERCENT FREQUENCY PERCENT 2 3688513 100.0 3688513 100.0 DISCHARGE STATUS, COL 47 CUMULATIVE CUMULATIVE ITEM 7 FREQUENCY PERCENT FREQUENCY PERCENT 1 3536345 95.9 3536345 95.9 2 727 0.0 3537072 95.9 3 44805 1.2 3581877 97.1 4 6926 0.2 3588803 97.3 5 57094 1.5 3645897 98.8 6 11002 0.3 3656899 99.1 7 31614 0.9 3688513 100.0 AGE RECODED INTO 4 GROUPS, COL 49 CUMULATIVE CUMULATIVE ITEM 8 FREQUENCY PERCENT FREQUENCY PERCENT 1 3688513 100.0 3688513 100.0 NUMBER OF DIAGNOSES, COL 50 CUMULATIVE CUMULATIVE ITEM 9 FREQUENCY PERCENT FREQUENCY PERCENT 1 2178478 59.1 2178478 59.1 2 893834 24.2 3072312 83.3 3 318960 8.6 3391272 91.9 4 153127 4.2 3544399 96.1 5 71244 1.9 3615643 98.0 6 24980 0.7 3640623 98.7 7 47890 1.3 3688513 100.0 NUMBER OF PROCEDURES, COL 51 CUMULATIVE CUMULATIVE ITEM 10 FREQUENCY PERCENT FREQUENCY PERCENT 0 2210830 59.9 2210830 59.9 1 1255896 34.0 3466726 94.0 2 113531 3.1 3580257 97.1 3 47886 1.3 3628143 98.4 4 60370 1.6 3688513 100.0 AGE RECODED INTO 10-YR GRPS, COL 84-85 CUMULATIVE CUMULATIVE ITEM 15 FREQUENCY PERCENT FREQUENCY PERCENT 00 3688513 100.0 3688513 100.0 RACE, CUMULATIVE CUMULATIVE ITEM 16 FREQUENCY PERCENT FREQUENCY PERCENT 1 2112192 57.3 2112192 57.3 2 479529 13.0 2591721 70.3 3 32168 0.9 2623889 71.1 4 107598 2.9 2731487 74.1 5 140717 3.8 2872204 77.9 6 816309 22.1 3688513 100.0 MARITAL STATUS, RECODED, COL 87 CUMULATIVE CUMULATIVE ITEM 17 FREQUENCY PERCENT FREQUENCY PERCENT 2 3688513 100.0 3688513 100.0 LOS RECODED TO 5 CATEGORIES, COL 88 CUMULATIVE CUMULATIVE ITEM 18 FREQUENCY PERCENT FREQUENCY PERCENT 1 3528150 95.7 3528150 95.7 2 81830 2.2 3609980 97.9 3 29238 0.8 3639218 98.7 4 13303 0.4 3652521 99.0 5 35992 1.0 3688513 100.0 REGION, CUMULATIVE CUMULATIVE ITEM 19 FREQUENCY PERCENT FREQUENCY PERCENT 1 684583 18.6 684583 18.6 2 806457 21.9 1491040 40.4 3 1264024 34.3 2755064 74.7 4 933449 25.3 3688513 100.0 BEDSIZE CATEGORY, COL 99 CUMULATIVE CUMULATIVE ITEM 20 FREQUENCY PERCENT FREQUENCY PERCENT 1 535538 14.5 535538 14.5 2 859207 23.3 1394745 37.8 3 713188 19.3 2107933 57.1 4 1094134 29.7 3202067 86.8 5 486446 13.2 3688513 100.0 HOSPITAL OWNERSHIP, COL 100 CUMULATIVE CUMULATIVE ITEM 21 FREQUENCY PERCENT FREQUENCY PERCENT 1 398368 10.8 398368 10.8 2 538756 14.6 3149757 85.4 3 2751389 74.6 3688513 100.0 PRINCIPAL EXP SOURCE OF PAYMENT, COL 131 CUMULATIVE CUMULATIVE ITEM 24.1 FREQUENCY PERCENT FREQUENCY PERCENT 0 183551 5.0 183551 5.0 2 19760 0.5 203311 5.5 3 1009658 27.4 1212969 32.9 4 404673 11.0 1617642 43.9 5 105881 2.9 1723523 46.7 6 363363 9.9 2086886 56.6 7 1324135 35.9 3411021 92.5 8 272754 7.4 3683775 99.9 9 4738 0.1 3688513 100.0 EXP SOURCE OF PAYMENT, COL 132 CUMULATIVE CUMULATIVE ITEM 24.2 FREQUENCY PERCENT FREQUENCY PERCENT Frequency Missing = 3688513 SECONDARY EXP SOURCE OF PAYMENT, COL 133 CUMULATIVE CUMULATIVE ITEM 24.3 FREQUENCY PERCENT FREQUENCY PERCENT 0 36150 14.3 36150 14.3 3 32528 12.9 68678 27.2 5 39196 15.6 107874 42.8 6 13324 5.3 121198 48.1 7 23232 9.2 144430 57.3 8 101075 40.1 245505 97.4 9 6549 2.6 252054 100.0 Frequency Missing = 3436459 SECONDARY EXP SOURCE OF PAYMENT, COL 134 CUMULATIVE CUMULATIVE ITEM 24.4 FREQUENCY PERCENT FREQUENCY PERCENT 8 406 100.0 406 100.0 Frequency Missing = 3688107 4. WEIGHTED FREQUENCIES FOR NON-NEWBORN DATA (Defined as Column 84-85 Not Equal to 00) RECODED DISCHARGE STATUS, COL 3 CUMULATIVE CUMULATIVE ITEM 1 FREQUENCY PERCENT FREQUENCY PERCENT 1 29752975 96.1 29752975 96.1 2 821297 2.7 30574272 98.8 3 376640 1.2 30950912 100.0 UNITS IN WHICH AGE IS GIVEN, COL 33 CUMULATIVE CUMULATIVE UNITS FREQUENCY PERCENT FREQUENCY PERCENT 1 30128971 97.3 30128971 97.3 2 573678 1.9 30702649 99.2 3 248263 0.8 30950912 100.0 SEX, CUMULATIVE CUMULATIVE ITEM 3 FREQUENCY PERCENT FREQUENCY PERCENT 1 12406079 40.1 12406079 40.1 2 18544833 59.9 30950912 100.0 MARITAL STATUS, COL 36 CUMULATIVE CUMULATIVE ITEM 4 FREQUENCY PERCENT FREQUENCY PERCENT 1 9194054 29.7 9194054 29.7 2 6062361 19.6 15256415 49.3 3 2760981 8.9 18017396 58.2 4 996991 3.2 19014387 61.4 5 195046 0.6 19209433 62.1 6 7576666 24.5 26786099 86.5 7 4164813 13.5 30950912 100.0 DISCHARGE STATUS, COL 47 CUMULATIVE CUMULATIVE ITEM 7 FREQUENCY PERCENT FREQUENCY PERCENT 1 25687783 83.0 25687783 83.0 2 252511 0.8 25940294 83.8 3 915297 3.0 26855591 86.8 4 1703984 5.5 28559575 92.3 5 1193400 3.9 29752975 96.1 6 821297 2.7 30574272 98.8 7 376640 1.2 30950912 100.0 AGE RECODED INTO 4 GROUPS, COL 49 CUMULATIVE CUMULATIVE ITEM 8 FREQUENCY PERCENT FREQUENCY PERCENT 1 2531414 8.2 2531414 8.2 2 11226701 36.3 13758115 44.5 3 6328830 20.4 20086945 64.9 4 10863967 35.1 30950912 100.0 NUMBER OF DIAGNOSES, COL 50 CUMULATIVE CUMULATIVE ITEM 9 FREQUENCY PERCENT FREQUENCY PERCENT 1 4873799 15.7 4873799 15.7 2 6562721 21.2 11436520 37.0 3 5125483 16.6 16562003 53.5 4 4214924 13.6 20776927 67.1 5 3898130 12.6 24675057 79.7 6 2072251 6.7 26747308 86.4 7 4203604 13.6 30950912 100.0 NUMBER OF PROCEDURES, COL 51 CUMULATIVE CUMULATIVE ITEM 10 FREQUENCY PERCENT FREQUENCY PERCENT 0 10524691 34.0 10524691 34.0 1 8393887 27.1 18918578 61.1 2 5168907 16.7 24087485 77.8 3 3558119 11.5 27645604 89.3 4 3305308 10.7 30950912 100.0 AGE RECODED INTO 10-YR GRPS, COL 84-85 CUMULATIVE CUMULATIVE ITEM 15 FREQUENCY PERCENT FREQUENCY PERCENT 01 821941 2.7 821941 2.7 02 805641 2.6 1627582 5.3 03 903832 2.9 2531414 8.2 04 3287467 10.6 5818881 18.8 05 4614671 14.9 10433552 33.7 06 3324563 10.7 13758115 44.5 07 2907608 9.4 16665723 53.8 08 3421222 11.1 20086945 64.9 09 4883458 15.8 24970403 80.7 10 5980509 19.3 30950912 100.0 RACE, CUMULATIVE CUMULATIVE ITEM 16 FREQUENCY PERCENT FREQUENCY PERCENT 1 20017886 64.7 20017886 64.7 2 3692237 11.9 23710123 76.6 3 138124 0.4 23848247 77.1 4 446582 1.4 24294829 78.5 5 542843 1.8 24837672 80.2 6 6113240 19.8 30950912 100.0 MARITAL STATUS, RECODED, COL 87 CUMULATIVE CUMULATIVE ITEM 17 FREQUENCY PERCENT FREQUENCY PERCENT 1 9389100 30.3 9389100 30.3 2 9820333 31.7 19209433 62.1 3 11741479 37.9 30950912 100.0 LOS RECODED TO 5 CATEGORIES, COL 88 CUMULATIVE CUMULATIVE ITEM 18 FREQUENCY PERCENT FREQUENCY PERCENT 1 23727687 76.7 23727687 76.7 2 4648522 15.0 28376209 91.7 3 1345478 4.3 29721687 96.0 4 559337 1.8 30281024 97.8 5 669888 2.2 30950912 100.0 REGION, CUMULATIVE CUMULATIVE ITEM 19 FREQUENCY PERCENT FREQUENCY PERCENT 1 7140865 23.1 7140865 23.1 2 7121396 23.0 14262261 46.1 3 11255745 36.4 25518006 82.4 4 5432906 17.6 30950912 100.0 BEDSIZE CATEGORY, COL 99 CUMULATIVE CUMULATIVE ITEM 20 FREQUENCY PERCENT FREQUENCY PERCENT 1 5353341 17.3 5353341 17.3 2 7750078 25.0 13103419 42.3 3 6389707 20.6 19493126 63.0 4 8041502 26.0 27534628 89.0 5 3416284 11.0 30950912 100.0 HOSPITAL OWNERSHIP, COL 100 CUMULATIVE CUMULATIVE ITEM 21 FREQUENCY PERCENT FREQUENCY PERCENT 1 3154143 10.2 3154143 10.2 2 3758527 12.1 27192385 87.9 3 24038242 77.7 30950912 100.0 PRINCIPAL EXP SOURCE OF PAYMENT, COL 131 CUMULATIVE CUMULATIVE ITEM 24.1 FREQUENCY PERCENT FREQUENCY PERCENT 0 1057494 3.4 1057494 3.4 1 340840 1.1 1398334 4.5 2 10849770 35.1 12248104 39.6 3 4140351 13.4 16388455 52.9 4 1842746 6.0 18231201 58.9 5 535102 1.7 18766303 60.6 6 2706935 8.7 21473238 69.4 7 7507101 24.3 28980339 93.6 8 1864893 6.0 30845232 99.7 9 105680 0.3 30950912 100.0 EXP SOURCE OF PAYMENT, COL 132 CUMULATIVE CUMULATIVE ITEM 24.2 FREQUENCY PERCENT FREQUENCY PERCENT Frequency Missing = 30950912 SECONDARY EXP SOURCE OF PAYMENT, COL 133 CUMULATIVE CUMULATIVE ITEM 24.3 FREQUENCY PERCENT FREQUENCY PERCENT 0 388094 5.5 388094 5.5 2 6193 0.1 394287 5.5 3 1272766 17.9 1667053 23.4 5 215010 3.0 1882063 26.5 6 1622516 22.8 3504579 49.3 7 2797473 39.3 6302052 88.6 8 754170 10.6 7056222 99.3 9 53049 0.7 7109271 100.0 Frequency Missing = 23841641 SECONDARY EXP SOURCE OF PAYMENT, COL 134 CUMULATIVE CUMULATIVE ITEM 24.4 FREQUENCY PERCENT FREQUENCY PERCENT 0 15564 11.5 15564 11.5 3 21581 15.9 37145 27.4 5 3973 2.9 41118 30.4 6 18229 13.5 59347 43.8 7 48023 35.5 107370 79.3 8 28016 20.7 135386 100.0 Frequency Missing = 30815526
