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For a list of public datasets by topic, click here. If you are unable to narrow your choice of dataset based on the topic grid below, consider using this search tool developed by the Comparative Effectiveness Large Datasets Inventory at UCSF.

Click on the dataset name for more detailed information about the dataset

American Hospital Association Annual Survey Annual survey data from US hospitals with focus on organizational characteristics and health care utilization
AMA Physician Masterfile Database of US physicians with information on education, training, and professional certification
Area Resource File (ARF) County-level data on healthcare professionals, health facilities and utilization, and census data
Atherosclerosis Risk in Communities (ARIC) Population cohort study of late-middle age subjects and community surveillance program of cardiac events
Behavioral Risk Factor Surveillance System (BRFSS) Serial cross-sectional national survey of health risk behaviors, preventative health practices, and health care access
California Health Interview Survey (CHIS) Serial cross-sectional survey of health, socioeconomic, behavioral, and environmental characteristics of adult and children in California
Canadian Institute for Health Information databases Series of databases from Canada
Cardiovascular Health Study (CHS) Population cohort study of elders with focus on cardiovascular disease and geriatric issues
Community Tracking Study (CTS) Longitudinal cohort study with surveys of patients and physicians
Consumer Assessment of Healthcare Providers and Systems (CAHPS) Family of surveys of patient satisfaction and experience with health care
Coronary Artery Risk Development in Young Adults (CARDIA) Population cohort study of young adults with focus on cardiovascular disease
Health and Retirement Study (HRS) & Asset and Health Dynamics among the Oldest Old (AHEAD) Longitudinal panel studies of late-middle-age and elderly persons with extensive socioeconomic data
HCUP State Inpatient Databases (SID) Clinical and resource utilization information from inpatient stays in participating states
HCUP State Ambulatory Surgery Databases (SASD) Clinical and resource utilization information from ambulatory surgical encounters in participating states
HCUP State Emergency Department Databases (SEDD) Clinical and resource utilization information from emergency department visits in participating states
HCUP Nationwide Inpatient Sample (NIS) Nationwide database of clinical and resource utilization information from inpatient stays
HCUP Nationwide Emergency Department Sample (NEDS) Nationwide database of clinical and resource utilization information from emergency department visits
Health Information National Trends Survey (HINTS) Biannual telephone survey of the public’s knowledge, attitudes, and behavior regarding cancer
HMO Cancer Research Network Consortium of integrated health care delivery sites that collect data on a wide range of aspects of cancer care
Longitudinal Studies of Aging (LSOAs) Multicohort study of elders with a focus on changes in health, functional status, living arrangements, and health services utilization
Medicaid Data Claims data on Medicaid patients including demographics and resource utilization in a wide variety of inpatient and outpatient settings
Medical Expenditure Panel Survey (MEPS) Nationwide panel surveys of individuals, families, health care providers, and employers covering a variety of topics
Medical School Graduation Questionnaire and Matriculating Student Questionnaire Nationwide surveys of medical students about career choices, medical school admissions process, and educational experiences during medical school
Medicare Claims Data Claims data on Medicare patients including demographics and resource utilization in a wide variety of inpatient and outpatient settings
Medicare Current Beneficiary Survey (MCBS) Panel survey of health status, health care use, health insurance, socioeconomic and demographic characteristics, and health expenditures among Medicare beneficiaries
Midlife in the United States (MIDUS) Longitudinal survey of younger and older adults including psychosocial, behavioral, sociodemographic, and health status characteristics, with supplements covering specialized clinical assessments
Minimum Data Set (Long-Term Care) Health status assessments of long-term care residents, administered nationwide, including physical, psychosocial, and physiological functioning
National Ambulatory Medical Care Survey (NAMCS) & National Hospital Ambulatory Care Survey (NHAMCS) Nationally-representative serial cross-sectional surveys of outpatient and emergency department visits
National Cancer Database (NCDB) Nationwide cancer registry and outcomes database with information on patient characteristics, tumor staging and histology, treatments, recurrence, and survival
National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) Nationwide longitudinal survey of alcohol and drug use and associated psychiatric and medical comorbidities
National Health Interview Survey (NHIS) Nationwide serial cross-sectional survey of individuals and families including information on health status, injuries, health insurance, access and utilization, and financial information
National Health and Nutrition Examination Survey (NHANES) Nationally representative series of studies combining data from interviews, physical examination, and laboratory tests
National Home and Hospice Care Survey Continuing series of surveys of hospice and home care agencies including information about type of services provided and patient diagnoses, health status, length of stay, and other data
National Hospital Discharge Survey (NHDS) Annual nationally-representative survey of U.S. hospital discharges, including data abstracted from patient charts and administrative data
National Longitudinal Survey of Adolescent Health National longitudinal survey of causes and outcomes of health-related behaviors in adolescents and young adults
National Program of Cancer Registries (NPCR) Data assembled from state cancer registries, including information about patient demographics as well as cancer rates and counts by geographic area
National Surgical Quality Improvement Program (NSQIP) Ongoing data collection on major surgical procedures from U.S. hospitals including data on preoperative patient characteristics, intraoperative variables, and morbidity and mortality
National Survey of Ambulatory Surgery (NSAS) Nationally-representative survey of ambulatory surgery in hospital-based and freestanding ambulatory surgery centers
Surveillance, Epidemiology and End Results Program (SEER), and SEER-Medicare data National cancer registry database, available with or without linkages to Medicare data
U.S. Census data Data tools provided by the U.S. Census Bureau; census data can be linked to other datasets, for example to obtain median income for each U.S. zip code
U.S. Renal Data System (USRDS) Extensive nationwide data on patients with end-stage renal disease, collected on an ongoing basis