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NIS Database Documentation - Corrections
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.
 
Corrections to the Nationwide Inpatient Sample 1998-1999

Please refer to the information below for corrections to the NIS data set. In some cases, there is a downloadable document that either provides more information or provides a program to correct the problem.

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Incorrect label for region

In the 1998 and 1999 Description of Data Elements for the Hospital File, the value 1 for the data element region (HOSP_REGION) is incorrectly specified as "Northwest." Region 1 should be labeled "Northeast."
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Internet Citation: HCUP NIS Database Documentation - Corrections. Healthcare Cost and Utilization Project (HCUP). December 2004. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/nation/nis/corrections_1998_1999.jsp.
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Last modified 12/13/04