National Longitudinal Study of Adolescent Health

Alternate Titles(s): Add Health
UID: 10028
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, peer groups, and romantic relationships, providing unique opportunities to study how social environments and behaviors in adolescence are linked to health and achievement outcomes in young adulthood. Public use biomarker data has been added.
1994 - 2008
Geographic Coverage
United States
Subject Domain
Population Age
Child (2 years - 12 years)
Adolescent (13 years - 18 years)
Adult (19 years - 64 years)


Free to All
Application Required
Data are available for study from four instruments in Wave I (conducted from September 1994 through December 1995), two surveys in Wave II (conducted from April 1996 through August 1996), several sources in Wave III (collected from August 2001 through April 2002), and one in-home interview in Wave IV (conducted from January 2008 through February 2009). Read in files are available for SAS, STATA and SPSS. The Add Health data are available in two forms—a public-use dataset and a restricted-use contractual dataset. To be eligible, research must have an IRB-approved security plan for handling and storing sensitive data and sign a data-use contract agreeing to keep the data confidential. Contractual data are provided in separate, linkable datasets and contain a hidden signature identifying the purchaser.
Data Type
Dataset Format(s)
PubMed Search
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