biostudies-literatureHarris KMNICHD NIH HHSNIAAA NIH HHS391-8https://www.ebi.ac.uk/biostudies/studies/S-EPMC3574787biostudies-literatureUnknown16(1)This article describes the design and phenotype and genotype data available for sibling pairs with varying genetic relatedness in the National Longitudinal Study of Adolescent Health (Add Health). Add Health is a nationally representative longitudinal study of over 20,000 adolescents in the United States in 1994-1995 who have been followed for 15 years into adulthood. The Add Health design included oversamples of more than 3,000 pairs of individuals with varying genetic resemblance, ranging from monozygotic twins, dizygotic twins, full siblings, half siblings, and unrelated siblings who were raised in the same household. Add Health sibling pairs are therefore nationally representative and followed longitudinally from early adolescence into adulthood with four in-home interviews during the period 1994-2009. Add Health has collected rich longitudinal social, behavioral, environmental, and biological data, as well as buccal cell DNA from all sample members, including sibling pairs. Add Health has an enlightened dissemination policy and to date has released phenotype and genotype data to more than 10,000 researchers in the scientific community.Twin research and human genetics : the official journal of the International Society for Twin StudiesThe National Longitudinal Study of Adolescent Health (Add Health) sibling pairs data.PMC3574787T32 AA0074643P01 HD31921AA07464R01 HD073342P01 HD031921R24 HD050924P01-HD31921Harris KMHaberstick BCSmolen AHalpern CTfalseThe National Longitudinal Study of Adolescent Health (Add Health) sibling pairs data.This article describes the design and phenotype and genotype data available for sibling pairs with varying genetic relatedness in the National Longitudinal Study of Adolescent Health (Add Health). Add Health is a nationally representative longitudinal study of over 20,000 adolescents in the United States in 1994-1995 who have been followed for 15 years into adulthood. The Add Health design included oversamples of more than 3,000 pairs of individuals with varying genetic resemblance, ranging from monozygotic twins, dizygotic twins, full siblings, half siblings, and unrelated siblings who were raised in the same household. Add Health sibling pairs are therefore nationally representative and followed longitudinally from early adolescence into adulthood with four in-home interviews during the period 1994-2009. Add Health has collected rich longitudinal social, behavioral, environmental, and biological data, as well as buccal cell DNA from all sample members, including sibling pairs. Add Health has an enlightened dissemination policy and to date has released phenotype and genotype data to more than 10,000 researchers in the scientific community.2013-01-01T00:00:00Z2013 Feb2020-11-19T14:25:14Z2019-03-27T01:04:54ZS-EPMC35747872323178010.1017/thg.2012.137