National Longitudinal Study of Adolescent to Adult Health
The National Longitudinal Study of Adolescent to Adult Health, also known as Add Health, is a multiwave longitudinal study of adolescents in the United States. It was begun in 1994 in response to a Congressional mandate to study adolescent health, and was initially called the National Longitudinal Study of Adolescent Health.
Source: Wikipedia — National Longitudinal Study of Adolescent to Adult Health (CC BY-SA 4.0)