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J Stud Alcohol. 1992 Sep;53(5):447-57.

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

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  • 1Department of Psychiatry, Columbia University, New York, N.Y. 10032.

Abstract

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 of legal drugs, alcohol or cigarettes; marijuana; illicit drugs other than marijuana; and medically prescribed drugs. Whereas progression to illicit drugs among men is dependent upon prior use of alcohol, among women either cigarettes or alcohol is a sufficient condition for progression to marijuana. Age of onset and frequency of use at a lower stage of drug use are strong predictors of further progression.

PMID:
1405637
[PubMed - indexed for MEDLINE]
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