nis - HCUP - Agency for Healthcare Research and Quality

More documents

Recommendations

Info

NIS Data Sources, Hospitals, And Inpatient StaysTable 2 summarizes the data sources, number of hospitals, and number of inpatient stays in NISdata.Table 2. Summary of NIS Data Sources, Hospitals and Inpatient Stays, 1988-1998CalendaryearData sourcesNumber ofhospitalsNumber of inpatientstays1988 CA CO FL IL IA MA NJ WA 759 5,265,7561989 AZ CA CO FL IL IA MA NJ PA WA WI(Added AZ, PA, WI)1990 AZ CA CO FL IL IA MA NJ PA WA WI(No change)1991 AZ CA CO FL IL IA MA NJ PA WA WI(No change)1992 AZ CA CO FL IL IA MA NJ PA WA WI(No change)1993 AZ CA CO CT FL IL IA KS MD MA NJ NYOR PA SC WA WI(Added CT, KS, MD, NY, OR, SC)1994 AZ CA CO CT FL IL IA KS MD MA NJ NYOR PA SC WA WI(No change)1995 AZ CA CO CT FL IL IA KS MD MA MO NJNY OR PA SC TN WA WI(Added MO, TN)1996 AZ CA CO CT FL IL IA KS MD MA MO NJNY OR PA SC TN WA WI(No change)1997 AZ CA CO CT FL GA HI IL IA KS MD MAMO NJ NY OR PA SC TN UT WA WI(Added GA, HI, UT)1998 AZ CA CO CT FL GA HI IL IA KS MD MAMO NJ NY OR PA SC TN UT WA WI(No change)882 6,110,064871 6,268,515859 6,156,188856 6,195,744913 6,538,976904 6,385,011938 6,714,935906 6,542,0691,012 7,148,420984 6,827,3506
State-Specific RestrictionsSome data sources that contributed data to the NIS imposed restrictions on the release of certaindata elements or on the number and types of hospitals that could be included in the database.Detailed information on these state-specific restrictions is available in the special report onSources of NIS Data and State-specific Restrictions on the NIS Documentation CD-ROM.Contents of CD-ROM SetThere are two types of files included in the NIS: 1) data files and 2) documentation and tools files.1) Data Files - three types of ASCII formatted data files are included in NIS 1998:Inpatient Core File: This inpatient discharge-level file contains data for 100% of thedischarges from a sample of hospitals in participating states.Subsample Inpatient Core Files: Each of these discharge-level files contain all dataelements from the Core File, for a 10% subsample of discharges from the NIS; thesecan be combined to create a 20% NIS subsample. These files can be useful for testingprograms or validating models.Hospital Weights File: This hospital-level file contains one observation for eachhospital included in the NIS and contains weights and variance estimation dataelements, as well as linkage data elements. The unit of observation is the hospital.The HCUP hospital identifier (HOSPID) provides the linkage between the NISInpatient Core files and the Hospital Weights file.2) Documentation and Tools FilesDocumentation: Complete file documentation, variable notes, and summary statisticsare provided in a series of Portable Document Format (*.pdf) files. These files aredetailed in Table 6.SAS source code: Code is included for the format library for the variables and forloading ASCII data into SAS format.SPSS source code: Code is included for the variable library and for loading ASCIIdata into SPSS format.Labels: Labels for the Clinical Classifications Software (CCS), formerly called theClinical Classifications for Health Policy Research (CCHPR), and for the Diagnosis-Related Groups (multiple versions).File Specifications: Record layouts for all data files.NIS Data ElementsAll releases of the NIS contain two types of data: inpatient stay records and hospital informationwith weights. Table 3 and Table 4 identify the data elements that can be found in the inpatientstay and hospital weights files, respectively. This is not complete documentation for the data;please refer to the NIS Documentation CD-ROM for full documentation on all data elements andfor the record layout.7
Page 1: HEALTHCARE COST AND UTILIZATION PRO
Page 5 and 6: HCUP NATIONWIDE INPATIENT SAMPLE (N
Page 7 and 8: HEALTHCARE COST AND UTILIZATION PRO
Page 9: Table 1. Summary of NIS ReleasesDat
Page 13 and 14: Table 3. Data Elements in the NIS I
Page 15 and 16: SAMPLING OF HOSPITALS INCLUDED IN T
Page 17 and 18: GETTING STARTEDNIS information is p
Page 19 and 20: OTHER HCUP PRODUCTSThe AHRQ Home Pa
Page 21 and 22: DATA USE AGREEMENT FOR THE NATIONWI

nis - HCUP - Agency for Healthcare Research and Quality

Create successful ePaper yourself

Delete template?

Save as template?