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1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files and 1993-2011 NIS Trend Weights Files
This page includes NIS weighting options for trend analysis using multiple years of NIS data.
 
1993-2011 NIS Trend Weights Files and 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files

To adjust for changes in the 2012 NIS design, AHRQ developed new 1993-2011 NIS Trend Weights for analysis spanning 2012 and earlier NIS data. The new NIS Trend Weights replace the earlier 1988-1997 NIS Trend Weights, which adjusted for changes following the 1998 NIS redesign.

The 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files facilitate analysis using multiple years of NIS data. The 1993-2002 NIS Supplemental Discharge-Level Files provide additional data elements that were added for later data years of the NIS through 2002 as well as updated Trend Weights.


Internet Citation: 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files and 1993-2011 NIS Trend Weights Files Healthcare Cost and Utilization Project (HCUP). May 2015. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/nation/nis/nistrends.jsp.
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Last modified 5/27/15