Project ALERT: a cluster randomized trial.


OBJECTIVE To evaluate the effects of Project ALERT on adolescents' lifetime and 30-day use of cigarettes, alcohol, marijuana, and inhalants. DESIGN Cluster randomized trial. SETTING Schools from 11 states were enrolled in 2 successive cohorts from 2004 to 2008. PARTICIPANTS All public schools in the United States that included grades 6 through 8 and… (More)
DOI: 10.1001/archpediatrics.2009.88


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