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註釋Examines the prevalence of self-reported use of alcohol, cigarettes, and illicit drugs across subgroups of the U.S. civilian, non-institutionalized population aged 12 or older as defined by race/ethnicity and by other socio-demographic characteristics. Examines a wide range of drugs. Provides an up-to-date assessment of drug use prevalence and subgroup differences. Invites comparisons with patterns observed in previous years. Provides a separate chapter on trends in drug use for racial/ethnic subgroups from 1985 through 1991. Charts and tables.