National Longitudinal Study of Adolescent to Adult Health (Add Health) Wave III, 2001-2002

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 III</b> <br/> The Wave III public use data are helpful in analyzing the transition between adolescence and young adulthood. A total of 4,882 of the original Wave I public-use respondent sample were re-interviewed between August 2001 and April 2002. Wave III respondents were between 18 and 26 years old. <br/><br/> The Wave III public use dataset includes the following data files: <ul> <li>Main Respondent File: includes the In-Home Questionnaire data, grand sampling weights, AHP
VT scores, and biospecimen data for 4,882 respondents</li> <li>Relationship Table File</li> <li>Pregnancy Table File</li> <li>Relationship Detail File</li> <li>Completed Pregnancies File</li> <li>Current Pregnancies File</li> <li>Live Births File</li> <li>Children and Parenting File</li> <li>Education Data</li> </ul> <br/> *17 respondents in the Wave IV public use sample were 33 years old at the time of the interview.