Preventing substance use among native American youth: Three-year results

This study developed and tested skills- and community-based approaches to prevent substance abuse among Native American youth. After completing pretest measurements, 1,396 third- through fifth-grade Native American students from 27 elementary schools in five states were divided randomly by school into two intervention arms and one control arm. Following intervention delivery, youths in all arms completed posttest measurements and three annual follow-up measurements. Youths in schools assigned to the intervention arms learned cognitive and behavioral skills for substance abuse prevention. One intervention arm additionally engaged local community residents in efforts to prevent substance use among Native American youth. Outcome assessment batteries measured youths' reported use of smoked and smokeless tobacco, alcohol, and marijuana. Over the course of the 3.5-year study, increased rates of tobacco, alcohol, and marijuana use were reported by youths across the three arms of the study. Though cigarette use was unaffected by intervention, follow up rates of smokeless tobacco, alcohol, and marijuana use were lower for youths who received skills intervention than for youths in the control arm. Community intervention components appeared to exert no added beneficial influence on youths' substance use, beyond the impact of skills intervention components alone. Finally, gender differences were apparent across substances, measurements, and study arms, with girls smoking more cigarettes and boys using more smokeless tobacco, alcohol, and marijuana. (C) 2000 Elsevier Science Ltd.