Add Health Study

Secondary data analysis: A nationally representative study that explores the causes of health-related behaviors of adolescents in grades 7 through 12 and their outcomes in young adulthood. Add Health seeks to examine how social contexts (families, friends, peers, schools, neighborhoods, and communities) influence adolescents' health and risk behaviors. Initiated in 1994 under a grant from the National Institute of Child Health and Human Development (NICHD) with co-funding from 17 other federal agencies, Add Health is the largest, most comprehensive survey of adolescents ever undertaken. Data at the individual, family, school, and community levels were collected in two waves between 1994 and 1996. In 2001 and 2002, Add Health respondents, 18 to 26 years old, were re-interviewed in a third wave to investigate the influence that adolescence has on young adulthood.

The NICHD Study of Early Child Care (SECC)

Secondary data analysis: The NICHD Study of Early Child Care (SECC) is a comprehensive longitudinal study initiated by The National Institute of Child Health and Human Development (NICHD) in 1989 to answer the many questions about the relationship between child care experiences and characteristics and children's developmental outcomes. It is the most comprehensive child care study conducted to date to determine how variations in child care are related to children's development.

The Georgian and Swiss Adolescent Health Surveys

Secondary data analysis: Two national samples of approximately 8,000 youth based on a two-stage cluster sample stratified by age, region, type of school, and language (4 in Georgia and 4 in Switzerland. Collaborators: Pierre-Andre Michaud, M.D., Groupe de recherche sur la santé des adolescents, Institut universitaire de médecine sociale et préventive, Université de Lausanne, Lausanne, Switzerland and Karaman Pagava, M.D., Research Group on Children & Adolescent Health & Development, Institute of Medical Biotechnology, Academy of Sciences of Georgia, Tbilisi, Georgia.