Period, age, and cohort effects on substance use among young Americans: a decade of change, 1976-86.
American Journal of Public Health October 1, 1988 Patrick M. O’malley, Jerald G. Bachman, Lloyd D. Johnston 111 citations
Period, age, and cohort effects on substance use among American youth aged 18 to 28 from the high school classes of 1976 to 1986 are differentiated using a cohort-sequential design based on annual surveys of nationally representative samples of high school seniors and follow-ups. Twelve licit and illicit drugs are examined. Period effects appear for alcohol use (monthly and heavy occasions), marijuana, cocaine, amphetamines, methaqualone, barbiturates, LSD, other psychedelics, and tranquilizers. Age effects are found for heavy drinking, cigarette smoking, monthly and daily alcohol use, and annual prevalence of cocaine, amphetamines, barbiturates, LSD, and narcotics other than heroin. Class effects are seen for cigarette smoking and daily marijuana use.