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Does occasional cannabis use impact anxiety and depression treatment outcomes?: Results from a randomized effectiveness trial.

Abstract
This study investigated the extent to which occasional cannabis use moderated anxiety and depression outcomes in the Collaborative Care for Anxiety and Panic (CCAP) study, a combined cognitive-behavioral therapy (CBT) and pharmacotherapy randomized effectiveness trial. Participants were 232 adults from six university-based primary care outpatient clinics in three West Coast cities randomized to receive either the CCAP intervention or the usual care condition. Results showed significant (P<.01) evidence of an interaction between treatment group (CCAP vs. usual care) and cannabis use status (monthly vs. less than monthly) for depressive symptoms, but not for panic disorder or social phobia symptoms (all P>.05). Monthly cannabis users' depressive symptoms improved in the CCAP intervention just as much as those who used cannabis less than monthly, whereas monthly users receiving usual care had significantly more depressive symptoms than those using less than monthly. A combined CBT and medication treatment intervention may be a promising approach for the treatment of depression among occasional cannabis users.
AuthorsJonathan B Bricker, Joan Russo, Murray B Stein, Cathy Sherbourne, Michelle Craske, Trevor J Schraufnagel, Peter Roy-Byrne
JournalDepression and anxiety (Depress Anxiety) Vol. 24 Issue 6 Pg. 392-8 ( 2007) ISSN: 1091-4269 [Print] United States
PMID17096386 (Publication Type: Comparative Study, Journal Article, Multicenter Study, Randomized Controlled Trial)
Copyright(c) 2006 Wiley-Liss, Inc.
Chemical References
  • Anti-Anxiety Agents
  • Antidepressive Agents
Topics
  • Adult
  • Anti-Anxiety Agents (administration & dosage)
  • Antidepressive Agents (administration & dosage)
  • Cognitive Behavioral Therapy
  • Combined Modality Therapy
  • Depressive Disorder (diagnosis, psychology, therapy)
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Marijuana Smoking (adverse effects, psychology)
  • Middle Aged
  • Panic Disorder (diagnosis, psychology, therapy)
  • Personality Inventory
  • Phobic Disorders (diagnosis, psychology, therapy)
  • Treatment Outcome

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