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- 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. The first wave of the study, funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development, involved administering a questionnaire to a nationally representative sample of 7th- through 12th-graders during the 1994-95 school year. In the first wave of the study, the questionnaire was administered to about 20,000 adolescents, making it one of the largest longitudinal surveys of adolescents ever conducted. The participants were then re-interviewed in 1996 (wave II), 2001–02 (wave III), and 2008 (wave IV), with a fifth wave of data collection underway since 2016. The first three waves included, among other information, detailed and sensitive interviews, and the 11,500 participants in wave III also provided urine and saliva samples. (en)
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- 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. The first wave of the study, funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development, involved administering a questionnaire to a nationally representative sample of 7th- through 12th-graders during the 1994-95 school year. In the first wave of the study, the questionnaire was administered to about 20,000 adolescents, making it one of the largest longitudinal surveys of adolescents ever conducted. The participants were then re-inte (en)
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- National Longitudinal Study of Adolescent to Adult Health (en)
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