Stages of progression in drug involvement from adolescence to adulthood: further evidence for the gateway theory.


Sequential stages of involvement in alcohol and/or cigarettes, marijuana, other illicit drugs and medically prescribed psychoactive drugs from adolescence to adulthood are investigated in a longitudinal cohort that has been followed from ages 15 to 35. Alternative models of progression are tested for their goodness of fit. Four stages are identified: that… (More)


Figures and Tables

Sorry, we couldn't extract any figures or tables for this paper.