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 Jackson Heart Study (JHS) is a population-based longitudinal study based in Jackson, Mississippi that investigates risk factors for cardiovascular disease among African Americans. It is a collaborative research project by the University of Mississippi Medical Center, Jackson State University, and Tougaloo College. The primary objective is to investigate environmental and genetic factors associated...

The Demographic and Health Surveys (DHS) Program overseen by the US Agency for International AID (USAID) uses nationally representative surveys, biomarker testing, and geographic location to collect data on monitoring and impact evaluation indicators for individual countries and for cross-country comparisons. Standardized DHS surveys include the Demographic and Health Survey, Service Provision Assessment,...

This dataset was generated during a repeated cross-sectional national telephone survey of households, conducted as part of the evaluation of the Robert Wood Johnson Foundation's Urban Health Initiative (UHI). UHI is a long-term effort to improve the health, safety, and well-being of children and youth in five economically distressed cities in the United States: Baltimore, MD, Detroit, MI, Oakland,...

Data from the Examining Norms and Behaviors Linked to Eating (ENABLE) project was collected via a mixed-methods approach. Semi-structured interviews were conducted with 20 low-income Chinese-American three-generation families to collect information on attitudes and beliefs on the consumption of healthy food items (e.g. fruits, vegetables, brown rice, and low sodium products) and the behaviors of...

The Child Health and Development Studies (CHDS) were launched in 1959 as prospective longitudinal cohort studies on pregnancy, delivery, and child development from birth through adolescence. Between 1959 and 1967, 15,000 families with expectant mothers who were members of the Kaiser Foundation Health Plan in Oakland, California consented to enrollment. Health and lifestyle data on mothers, fathers,...

Between March 2020 and May 2022, Gallup conducted a web survey on members of the Gallup Panel, a nationally representative sample of U.S. adults aged 18 and above, to assess attitudes and behaviors related to the COVID-19 pandemic. From March 13 through April 26, 2020, approximately 1,200 responses were collected daily from a randomly selected sample of panel members. From April 27 to August 16,...

Generation R is an ongoing prospective cohort study of child development from the prenatal period through young adulthood in a multi-ethnic population recruited from the Rotterdam, Netherlands metropolitan area. The study enrolled 9,778 mothers with a delivery date between April 2002 and January 2006; they had 9,749 live births. The primary objective of the study is to identify early environmental...

Baby's First Years is the first randomized controlled trial in the United States to examine the causal impact of unconditional cash payments on children's early cognitive, socio-emotional, and brain development over 52 months. Researchers recruited 1,000 mothers with infants and incomes below the federal poverty line residing near study sites in New Orleans, LA, the Twin Cities (Minneapolis, MN and...