The National Health Interview Survey is a cross-sectional household interview survey. Sampling and interviewing are continuous throughout each year. The sampling plan follows a multistage area probability design that permits the representative sampling of households and noninstitutional group quarters (e.g., college dormitories). NHIS addresses topics such as health status, use of health services,...

The National Health and Nutrition Examination Survey (NHANES) is a program of studies designed to assess the health and nutritional status of adults and children in the United States. The survey is unique in that it combines interviews and physical examinations. The NHANES interview includes demographic, socioeconomic, dietary, and health-related questions. The examination component consists of medical,...

The NYC Health and Nutritional Examination Survey (NYC HANES), modeled on the National Health and Nutrition Examination Survey (NHANES), is a population-based, cross-sectional study with data colleced from physical examinations, clinical and laboratory tests, as well as face-to-face interviews and audio computer-assisted self-interviews (ACASI). It was first conducted in 2004 by the NYC Department...

The University of Michigan Health and Retirement Study (HRS) is a longitudinal panel study that surveys a representative sample of more than 26,000 Americans over the age of 50 every two years. The HRS explores the changes in labor force participation and the health transitions that individuals undergo toward the end of their work lives and in the years that follow, collecting information about income,...

The Treatment Episode Data Set (TEDS) is a national census data system of annual admissions (TEDS-A) to and discharges (TEDS-D) from substance abuse treatment facilities. TEDS collects this data from the States on all admissions and discharges aged 12 or older. TEDS provides information on service setting, treatment details, and demographic variables.

The National Longitudinal Study of Adolescent Health (Add Health) is a longitudinal study of a nationally representative sample of adolescents in grades 7-12 in the United States during the 1994-1995 school year. Add Health combines longitudinal survey data on respondents' social, economic, psychological and physical well-being with contextual data on the family, neighborhood, community, school, friendships,...

The Fragile Families and Child Wellbeing Study is following a cohort of nearly 5,000 children born in large U.S. cities between 1998 and 2000, roughly three-quarters of whom were born to unmarried parents. The Study consists of interviews with both mothers and fathers at birth and again when children are ages one, three and five, plus in-home assessments of children and their home environments at ages...

The National Vital Statistics System data are provided through contracts between National Center for Health Statistics and vital registration systems operated in the various jurisdictions legally responsible for the registration of vital events – births, deaths, marriages, divorces, and fetal deaths.

Project Tycho includes data from all weekly notifiable disease reports for the United States and elsewhere back to 1888. It includes data counts for 58 diseases and 81 disease subcategories, with available years varying across disease and location. Data are available as pre-compiled datasets, through a data query system, and through an API. Pre-compiled datasets include 92 datasets on specific diseases...

The Women's Health Initiative (WHI) is a long-term national health study that focuses on strategies for preventing heart disease, breast cancer, colorectal cancer, and osteoporotic fractures in postmenopausal women. The study includes data from 161,808 women aged 50-79. Datasets include information on demographics, diet, medical and physical measurements, medical history, outcomes (both adjudicated...