National (Nationwide) Inpatient Sample (NIS)
is the largest all-payer inpatient care database in the United States, containing data on more than seven million hospital stays. Its large sample size is ideal for developing national and regional estimates and enables analyses of rare conditions, uncommon treatments, and special populations. The following links provide summary statistics for the NIS.
Summary Statistics include means on all numeric variables, frequency distributions, and univariates on continuous variables. Summary statistics are provided by year.
1998 NIS - Version 2
|Internet Citation: HCUP NIS Summary Statistics. Healthcare Cost and Utilization Project (HCUP). January 2016. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/nation/nis/nissummstats.jsp.|
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