JAMA : the journal of the American Medical Association
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Randomized Controlled Trial Multicenter Study Clinical Trial
Long-term follow-up results of a randomized drug abuse prevention trial in a white middle-class population.
To evaluate the long-term efficacy of a school-based approach to drug abuse prevention. ⋯ Drug abuse prevention programs conducted during junior high school can produce meaningful and durable reductions in tobacco, alcohol, and marijuana use if they (1) teach a combination of social resistance skills and general life skills, (2) are properly implemented, and (3) include at least 2 years of booster sessions.