Restricted Access Add Health

Dataset Details

Data Summary

The National Longitudinal Study of Adolescent to Adult Health (Add Health) is a longitudinal study of a nationally representative sample of adolescents in grades 7-12 in the United States during the 1994-95 school year. The Add Health cohort has been followed into young adulthood with four in-home interviews, the most recent in 2008, when the sample was aged 24-32. Add Health is re-interviewing cohort members in a Wave V follow-up from 2016-2018 to collect social, environmental, behavioral, and biological data with which to track the emergence of chronic disease as the cohort moves through their fourth decade of life.

Temporal Extent

Longitudinal, semi-annual from 1994 to 2018

Geographic Extent

Nationally-representative of U.S. adolescents; Neighborhood-level geographies

Unit of Analysis


Topical Tags

  • Biodemography
  • Education
  • Health
  • Neighborhoods

Institutional Partners


Data Citation

Harris, Kathleen Mullan, and Richard J. Udry. National Longitudinal Study of Adolescent to Adult Health (Add Health), 1994-2018. Carolina Population Center, University of North Carolina-Chapel Hill.