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NIS Description of Data Elements
The NIS is set of longitudinal hospital inpatient databases included in the HCUP family. These databases are created by AHRQ through a Federal-State-Industry partnership.
 
DSNUM - Date source identification number
 
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes
 

The data source number (DSNUM) is assigned in the order in which the different data sources are processed. Therefore, the first data source processed has DSNUM = 1; the second data source has DSNUM = 2, and so forth. This data element was discontinued in 1998.

 
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Uniform Values
VariableDescriptionValueValue Description
DSNUMDate source identification numbernnData source number
 
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State Specific Notes
None
 
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Internet Citation: HCUP NIS Description of Data Elements. Healthcare Cost and Utilization Project (HCUP). September 2008. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/vars/dsnum/nisnote.jsp.
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Last modified 9/17/08