National Longitudinal Study of Adolescent to Adult Health (Add Health) Wave I, 1994-1995

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 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.
<br/><br/> <b>Wave I</b><br/> The public use dataset for Wave I contains information collected in 1994-95 from Add Health’s nationally representative sample of adolescents. This dataset includes Wave I respondents and consists of one-half of the core sample, chosen at random, and one-half of the oversample of African-American adolescents with a parent who has a college degree. The total number of Wave I respondents in this dataset is approximately 6,500. <br/><br/> The Wave I public use dataset
includes information from each of the following sources (as available):
<ul> <li>In-School Questionnaire</li> <li>Wave I In-Home Interview</li> <li>Add Health Picture Vocabulary Test (AHPVT), an abbreviated version of the Peabody Picture Vocabulary Test—Revised, with age-standardized scores for adolescent respondents</li> <li>Wave I Parent Questionnaire</li> <li>Contextual data</li> <li>In-school network data</li> <li>Weights</li> </ul> <br/> *17 respondents in the Wave IV public use sample were 33 years old at the time of the interview.