illicit drugs

Do Classes of Polysubstance Use in Adolescence Differentiate Growth in Substances Used in the Transition to Young Adulthood?

The current study estimates classes of polysubstance use in a large group of adolescents (ages 12–18 at baseline) and examines the longitudinal trajectories of cigarette, alcohol, marijuana, and illicit drug use from adolescence to young adulthood for each class.