This study is maintained and distributed by the National Archive of Computerized Data on Aging (NACDA), the aging program within ICPSR. NACDA is sponsored by the National Institute on Aging (NIA) at the National Institutes of Heath (NIH).
National Hospital Discharge Survey, 2004 (ICPSR 4442)
Principal Investigator(s): United States Department of Health and Human Services. National Center for Health Statistics
The 2004 National Hospital Discharge Survey (NHDS) collects medical and demographic information annually from a sample of hospital discharge records. Variables include patients' demographic characteristics (sex, age, race, marital status), dates of admission and discharge, source and type of admission, status at discharge, final diagnoses, surgical and nonsurgical procedures, dates of surgeries, and sources of payment. Information on hospital characteristics such as bedsize, ownership, and region of the country is also included. The medical information is coded using the INTERNATIONAL CLASSIFICATION OF DISEASES, 9TH REVISION, CLINICAL MODIFICATION (ICD-9-CM).
These data are freely available.
WARNING: This study is over 150MB in size and may take several minutes to download on a typical internet connection.
U.S. Dept. of Health and Human Services, National Center for Health Statistics. NATIONAL HOSPITAL DISCHARGE SURVEY, 2004. ICPSR04442-v1. Hyattsville, MD: U.S. Dept. of Health and Human Services, National Center for Health Statistics [producer], 2006. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2006-05-03. http://doi.org/10.3886/ICPSR04442.v1
Persistent URL: http://doi.org/10.3886/ICPSR04442.v1
Scope of Study
Subject Terms: health care facilities, hospitalization, hospitals, illness, medical care, medical evaluation, medical procedures, medical records, patients
Geographic Coverage: United States
Date of Collection:
Universe: Patient discharges from nonfederal short-stay hospitals located in the 50 states and the District of Columbia.
Data Types: administrative records data
Sample: In 2004, the sample consisted of 501 hospitals. Of the 501 hospitals, 25 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 476 in-scope (eligible) hospitals, 439 hospitals responded to the survey.
Weight: These data contain one weight variable, wgt. Users should refer to the technical documentation for further information regarding the weight and its derivation. Additionally, users may need to weight the data prior to analysis.
Restrictions: In preparing the data file for this collection, the National Center for Health Statistics (NCHS) has removed direct identifiers and characteristics that might lead to identification of data subjects. As an additional precaution NCHS requires, under Section 308(d) of the Public Health Service Act (42 U.S.C. 242m), that data collected by NCHS not be used for any purpose other than statistical analysis and reporting. NCHS further requires that analysts not use the data to learn the identity of any persons or establishments and that the director of NCHS be notified if any identities are inadvertently discovered. ICPSR member institutions and other users ordering data from ICPSR are expected to adhere to these restrictions.
Original ICPSR Release: 2006-05-03
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