Nationwide Ambulatory Surgery Sample (NASS)
What is the NASS?
The Nationwide Ambulatory Surgery Sample (NASS) is part of the family of databases and software tools developed for the Healthcare Cost and Utilization Project (HCUP). The NASS produces national estimates of major ambulatory surgery encounters performed in hospital-owned facilities across the country. It contains clinical and resource-use information that is included in a typical hospital-owned facility record, including patient characteristics, clinical diagnostic and surgical procedure codes, disposition of patient, total charges, expected source of payment, and facility characteristics.
Advance Your Research
Apply valuable clinical and nonclinical variables to your research, including—
Rely on the NASS to study national ambulatory surgery encounters, including:
The NASS provides national estimates for approximately 10 million ambulatory surgery encounters and more than 13 million ambulatory procedures in the United States, making it an exceptional resource for conducting research on major ambulatory surgeries. For the NASS, major ambulatory surgeries are defined as selected invasive, therapeutic surgical procedures that typically require the use of an operating room and regional anesthesia, general anesthesia, or sedation. Available annually starting in the 2016 data year, NASS data are standardized across years to facilitate ease of use.
Expand Your Analyses
HCUP's Nationwide Databases are available for purchase from the online HCUP Central Distributor: www.hcup-us.ahrq.gov/tech_assist/centdist.jsp.
The HCUP Central Distributor is the entity that accepts, processes, and fulfills applications for the purchase and use of HCUP databases.
The NASS is provided in CSV format via secure digital download from the online HCUP Central Distributor. A statistical software package, such as SAS®, SPSS®, or Stata®, is required for analysis. Programs to load data into software packages are provided.
For a list of prices (including discounted student rates) and complete purchasing information, visit the HCUP-US website: www.hcup-us.ahrq.gov/. This site also provides detailed information about the Data Use Agreement, data elements, and software tools.
The Healthcare Cost and Utilization Project (HCUP, pronounced "H-Cup") is a family of powerful health care databases, software tools, and products for advancing research. Sponsored by the Agency for Healthcare Research and Quality (AHRQ), HCUP includes the largest all-payer, encounter-level collection of longitudinal health care data (inpatient, ambulatory surgery, and emergency department) in the United States, beginning in 1988.
HCUP is a Federal-State-Industry Partnership that brings together the data collection efforts of many organizations — such as State data organizations, hospital associations, private data organizations, and the Federal Government — to create a national information resource. HCUP would not be possible without the contributions of data collection Partners from across the nation.
For more information about HCUP, please visit www.hcup-us.ahrq.gov.
|Internet Citation: Nationwide Ambulatory Surgery Sample (NASS). Healthcare Cost and Utilization Project (HCUP). March 2020. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/news/exhibit_booth/nass_brochure.jsp.|
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|Last modified 3/19/20|