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Clinical Trial
. 2001 Sep;21(2):55-64; discussion 65-6.
doi: 10.1016/s0740-5472(01)00179-9.

A randomized controlled trial of brief cognitive-behavioral interventions for cannabis use disorder

J Copeland  1 , W Swift, R Roffman, R Stephens
Affiliations
Clinical Trial

A randomized controlled trial of brief cognitive-behavioral interventions for cannabis use disorder

J Copeland et al. J Subst Abuse Treat. 2001 Sep.

Abstract

The increasing demand for treatment for cannabis dependence in Australia and internationally has led to the identification of significant gaps in knowledge of effective interventions. A randomized controlled trial of brief cognitive-behavioral interventions (CBT) for cannabis dependence was undertaken to address this issue. A total of 229 participants were assessed and randomly assigned to either a six-session CBT program (6CBT), a single-session CBT intervention (1CBT), or a delayed-treatment control (DTC) group. Participants were assisted in acquiring skills to promote cannabis cessation and maintenance of abstinence. Participants were followed-up a median of 237 days after last attendance. Participants in the treatment groups reported better treatment outcomes than the DTC group. They were more likely to report abstinence, were significantly less concerned about their control over cannabis use, and reported significantly fewer cannabis-related problems than those in the DTC group. Those in the 6CBT group also reported more significantly reduced levels of cannabis consumption than the DTC group. While the therapist variable had no effect on any outcome, a secondary analysis of the 6CBT and 1CBT groups showed that treatment compliance was significantly associated with decreased dependence and cannabis-related problems. This study supports the attractiveness and effectiveness of individual CBT interventions for cannabis use disorders and the need for multisite replication trials.

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