%0 Journal Article %J J Consult Clin Psychol %D 2013 %T Indicated prevention for college student marijuana use: a randomized controlled trial. %A Lee, Christine M %A Kilmer, Jason R %A Neighbors, Clayton %A Atkins, David C %A Zheng, Cheng %A Walker, Denise D %A Larimer, Mary E %K Adolescent %K Adult %K Feedback, Psychological %K Female %K Follow-Up Studies %K Humans %K Male %K Marijuana Smoking %K Motivation %K Psychotherapy, Brief %K Students %K Treatment Outcome %K Universities %K Young Adult %X

OBJECTIVE: Marijuana is the most frequently reported illicit substance used on college campuses. Despite the prevalence, few published intervention studies have focused specifically on addressing high-risk marijuana use on college campuses. The present study evaluated the efficacy of an in-person brief motivational enhancement intervention for reducing marijuana use and related consequences among frequently using college students.

METHOD: Participants included 212 college students from 2 campuses who reported frequent marijuana use (i.e., using marijuana at least 5 times in the past month). Participants completed Web-based screening and baseline assessments and upon completion of the baseline survey were randomized to either an in-person brief intervention or an assessment control group. Follow-up assessments were completed approximately 3 and 6 months post-baseline. Marijuana use was measured by number of days used in the past 30 days, typical number of joints used in a typical week in the last 60 days, and marijuana-related consequences.

RESULTS: Results indicated significant intervention effects on number of joints smoked in a typical week and a trend toward fewer marijuana-related consequences compared with the control group at 3-month follow-up.

CONCLUSION: This study provides preliminary data on short-term effects of a focused marijuana intervention for college students at reducing marijuana use during the academic quarter.

%B J Consult Clin Psychol %V 81 %P 702-9 %8 2013 Aug %G eng %N 4 %R 10.1037/a0033285