Healthcare Cost and Utilization Project, Nationwide Inpatient Sample (HCUP NIS)

Description: The National (Nationwide) Inpatient Sample (NIS) is part of a family of databases and software tools developed for the Healthcare Cost and Utilization Project (HCUP). The NIS is the largest publicly available all-payer inpatient health care database in the United States, yielding national estimates of hospital inpatient stays. Unweighted, it contains data from more than 7 million hospital stays each year. Weighted, it estimates more than 35 million hospitalizations nationally. Developed through a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality (AHRQ), HCUP data inform decisionmaking at the national, State, and community levels. Dr. Kempker’s data ranges 1993-2014 (Dr. Kempker curated 2002-2011)

Coverage: National/State

Description of Cohort: In 2016, Hospitalized Patients from 46 states + D.C. (Number of participating states may vary by year)