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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 2000

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.


Correction to Instruction on How to Calculate Variances (Standard Errors)

Click to view the Correction to Instruction on How to Calculate Variances (Standard Errors) (PDF file, 76 KB)

South Carolina External Cause of Injury Codes

In the 2000 Nationwide Inpatient Sample, 6,248 discharges from South Carolina are missing external cause of injury codes (E Codes). No other NIS records are affected.

An ASCII file containing the missing information is available. The separate E Code file includes information only for those South Carolina discharges missing E Codes. There are 118,436 discharges from South Carolina in the 2000 NIS; only 6,248 South Carolina discharges are missing E Codes. NIS 2000 South Carolina Errata Sheet (PDF file, 70 KB).

To order the separate ASCII file containing the missing South Carolina E Code information, please contact the HCUP Central Distributor at:
If you need assistance working with the file, please contact us at:
 

Internet Citation: HCUP NIS Database Documentation - Corrections. Healthcare Cost and Utilization Project (HCUP). May 2017. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/nation/nis/corrections_2000.jsp.
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Last modified 5/23/17