National Longitudinal Study of Adolescent Health (Add Health), 1994-2008: HIV Data [Restricted Use] Harris, Kathleen Mullan Udry, J. Richard academic achievement adolescents alcohol consumption birth control classroom environment contraception dating (social) drinking behavior drug use eating habits educational environment families family planning family relationships family structure friendships health health behavior health care access health status household composition interpersonal relations living arrangements marriage neighborhood characteristics neighborhoods parent child relationship parental attitudes parental influence physical characteristics physical condition physical fitness physical limitations pregnancy history public assistance programs religious behavior religious beliefs school attendance self concept self esteem sexual attitudes sexual behavior smoking social environment social networks tobacco use violent behavior welfare services DSDR.IV DSDR.I ICPSR.XVII.C NAHDAP.I ICPSR.XVII.H FENWAY.VI DSDR.VIII DSDR.III 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. 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 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. The fourth wave of interviews expanded the collection of biological data in Add Health to understand the social, behavioral, and biological linkages in health trajectories as the Add Health cohort ages through adulthood. This component of the Add Health restricted data contains the Wave III HIV results data. For more information, please see the study website. 2011-02-18 survey data 27032 10.3886/ICPSR27032.v2 United States 1994--2008 ICPSR metadata records are licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License (http://creativecommons.org/licenses/by-nc/3.0/us/).