Overview of the State Ambulatory Surgery and Services Databases (SASD)
The State Ambulatory Surgery and Services Databases (SASD) are part of the family of databases and software tools developed for the Healthcare Cost and Utilization Project (HCUP). The SASD include encounter-level data for ambulatory surgeries and may also include various types of outpatient services such as observation stays, lithotripsy, radiation therapy, imaging, chemotherapy, and labor and delivery. The specific types of ambulatory surgery and outpatient services included in each SASD vary by State and data year. All SASD include data from hospital-owned ambulatory surgery facilities. In addition, some States include data from nonhospital-owned facilities.
Developed through a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality, HCUP data inform decisionmaking at the national, State, and community levels. This page provides an overview of the SASD. For more details, see SASD Database Documentation and the Introduction to the SASD (PDF file, 446 KB; HTML). Contents:
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The SASD include encounter-level data for ambulatory surgery and other outpatient services from hospital-owned facilities. In addition, some States provide ambulatory surgery and outpatient services from nonhospital-owned facilities. The specific types of ambulatory surgery and outpatient services included in each SASD vary by State and data year. A number of States make their SASD files available for purchase through the HCUP Central Distributor. See Availability of HCUP Data for a list of State database participation and availability by year.
Thirty-five States now participate in the SASD:
Additional information on the SASD may be found in the Introduction to the SASD (PDF file, 446 KB; HTML). |
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The SASD contain clinical and resource-use information that is included in a typical discharge abstract, with safeguards to protect the privacy of individual patients, physicians, and hospitals (as required by data sources). The SASD contain more than 100 clinical and nonclinical variables included in a hospital discharge abstract, such as:
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The SASD are well suited for research that requires complete enumeration of ambulatory surgery in hospital-owned facilities within market areas or States. Used with the SID, the SASD may be used to compare inpatient surgery data with ambulatory surgery data. The SASD promote comparative studies of health care services and support health care policy research on a variety of topics, including:
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SASD releases beginning in data year 1997 are available for purchase through the HCUP Central Distributor. Costs vary by State and data year. All HCUP data users, including data purchasers and collaborators, must complete the online HCUP Data Use Agreement Training Tool, and must read and sign the Data Use Agreement for State Databases (PDF file, 206 KB; HTML). The SASD are available for purchase online through the HCUP Central Distributor. Questions regarding purchasing databases can be directed to the HCUP Central Distributor:
E-mail: HCUPDistributor@AHRQ.gov
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The SASD data set comes in ASCII format and can be run on desktop computers with a DVD drive. To load and analyze the SASD, you will need the following:
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Internet Citation: HCUP Databases. Healthcare Cost and Utilization Project (HCUP). June 2016. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/sasdoverview.jsp. |
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Last modified 6/15/16 |