Design of the HCUP (Healthcare Cost and Utilization Project) Nationwide Inpatient Sample, 2002. HCUP Nationwide Inpatient Sample

摘要

The Nationwide Inpatient Sample (NIS) is one of a family of databases and software tools developed as part of the Healthcare Cost and Utilization Project (HCUP), a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality (AHRQ). The NIS is the largest nationwide all-payer hospital inpatient care database in the U.S. Each year the NIS contains data from approximately seven to eight million hospital stays all discharge data from nearly 1000 hospitals selected from HCUP State Inpatient Databases (SID) data. This figure approximates a 20% stratified sample of U.S. non-rehabilitation, community hospitals. The NIS team developed the NIS to provide analyses of hospital utilization, charges, and quality of care across the United States. The target universe includes all acute care discharges from non-rehabilitation, community hospitals in the United States. There were 4,840 hospitals in the hospital universe in 2002. The 2002 NIS comprises all discharges from a sample of hospitals in this target universe. This report describes the NIS sample and weights, summarizes the contents of the 2002 NIS, and discusses data analysis issues. Previous NIS releases covered 1988 through 2001. This document highlights cumulative information for all previous years to provide a longitudinal view of the database. Once again, we have enhanced the nationwide representation of the sample by incorporating data from additional HCUP State Partners. The 2002 NIS includes data from 35 states, two more than the 2001 NIS.