| 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 |