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J Consult Clin Psychol. 2000 Oct;68(5):898-908.

Comparison of extended versus brief treatments for marijuana use.

Author information

  • 1Department of Psychology 0436, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA. stephens@vt.edu

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.

PMID:
11068976
[PubMed - indexed for MEDLINE]
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