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  • Title: Comparison of extended versus brief treatments for marijuana use.
    Author: Stephens RS, Roffman RA, Curtin L.
    Journal: J Consult Clin Psychol; 2000 Oct; 68(5):898-908. PubMed ID: 11068976.
    Abstract:
    Adult marijuana users (N = 291) seeking treatment were randomly assigned to an extended 14-session cognitive-behavioral group treatment (relapse prevention support group; RPSG), a brief 2-session individual treatment using motivational interviewing (individualized assessment and intervention; IAI), or a 4-month delayed treatment control (DTC) condition. Results indicated that marijuana use, dependence symptoms, and negative consequences were reduced significantly in relation to pretreatment levels at 1-, 4-, 7-, 13-, and 16-month follow-ups. Participants in the RPSG and IAI treatments showed significantly and substantially greater improvement than DTC participants at the 4-month follow-up. There were no significant differences between RPSG and IAI outcomes at any follow-up. The relative efficacy of brief versus extended interventions for chronic marijuana-using adults is discussed.
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