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Kandel, Denise B.; Logan, John A. – American Journal of Public Health, 1984
The period of major risk for initiation to cigarettes, alcohol, and marijuana is completed mostly by age 20, and to illicit drugs other than cocaine by age 21. Overall patterns are similar for both sexes, with men initiating all drugs (except prescribed psychoactives) at higher rates than women. (Author/GC)
Descriptors: Adolescents, Age Differences, Alcoholic Beverages, Cohort Analysis