Drinking by parents, siblings, and friends as predictors of regular alcohol use in adolescents and young adults : A longitudinal twin-family study.

Aims: The aim of this study was to examine whether the drinking habits of parents, siblings, and friends were related to regular drinking in adolescents and young adults, cross-sectionally as well as longitudinally. Methods: Data of 12-30-year-old twins from the Netherlands Twin Register were analysed. Information on regular drinking was collected in 1993, 1995, and 2000. Logistic regression analyses were conducted on cross-sectional data of 1993 (N = 3760), short-term longitudinal data of 1993-95 (N = 2919), and the long-term longitudinal data of 1993-2000 (N = 1779). Results: Results show th... Mehr ...