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NIS Summary Statistics
The NIS is a set of longitudinal hospital inpatient databases included in the HCUP family. These databases are created by AHRQ through a Federal-State-Industry partnership.
Nationwide Inpatient Sample (NIS)
is the largest all-payer inpatient care database in the United States, containing data on more than eight million hospital stays from over 1,000 hospitals. 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.
2011 NIS

2010 NIS

2009 NIS

2008 NIS

2007 NIS

2006 NIS

2005 NIS

2004 NIS

2003 NIS

2002 NIS

2001 NIS

2000 NIS

1999 NIS - Version 2

1998 NIS - Version 2

1997 NIS

1996 NIS

1995 NIS

1994 NIS

1993 NIS

1992 NIS

1991 NIS

1990 NIS

1989 NIS

1988 NIS


Internet Citation: HCUP NIS Summary Statistics. Healthcare Cost and Utilization Project (HCUP). June 2013. Agency for Healthcare Research and Quality, Rockville, MD.
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Last modified 6/10/13