Skip Navigation

NASS Related Reports
The Nationwide Ambulatory Surgery Sample (NASS) is a set of ambulatory surgery databases included in the HCUP family. These databases are created by AHRQ through a Federal-State-Industry partnership.
NASS Related Reports

The following report provides information on how to use the Nationwide Ambulatory Surgery Sample (NASS).
  • NIS Variance Report (Methods also apply to the NASS):
    • Calculating Nationwide Inpatient Sample Variances (PDF file, 317 KB; HTML)

Internet Citation: HCUP NASS Related Reports. Healthcare Cost and Utilization Project (HCUP). September 2019. Agency for Healthcare Research and Quality, Rockville, MD.
Are you having problems viewing or printing pages on this Website?
If you have comments, suggestions, and/or questions, please contact
Privacy Notice, Viewers & Players
Last modified 9/13/19