HCUP (Healthcare Cost and Utilization Project) Nationwide Inpatient Sample (NIS) Comparison Report. HCUP Methods Series

摘要

This report compares estimates calculated from the 2004 Nationwide Inpatient Sample (NIS) with statistics from two comparable databases the National Hospital Discharge Survey (NHDS) and the Medicare Provider Analysis and Review (MedPAR) with the objective of assessing potential biases. In addition, NIS estimates were contrasted with summary information from the American Hospital Association (AHA). This report summarizes methods and findings and provides all comparisons in detailed tables in the appendices. Further information on the databases compared in this report and descriptions of analytic methods can be found in previous NIS comparison reports. In addition to comparisons with national statistics, these data were also evaluated across several categories, including region, expected payer, hospital characteristics, patient demographics, diagnosis groupings, and procedure groupings.