Largest collection of longitudinal hospital care data in the United States. National and State databases on inpatient, emergency department and ambulatory surgery visits as well as information from reports and tools facilitate research on a broad range of health policy issues.
State, regional and national level discharge data, available for purchase. Includes State Inpatient Databases (SID), State Ambulatory Surgery Databases (SASD), State Emergency Department Databases (SEDD), Nationwide Inpatient Sample (NIS), and Kids' Inpatient Database (KID). Free tools include AHRQ Quality Indicators (QIs), Clinical Classifications Software (CCS), Comorbidity Software, and HCUPnet, a web interface to free HCUP data.