The Cannabis Youth Treatment (CYT) Study: Main findings from two randomized trials

Michael Dennis, Susan H. Godley, Guy Diamond, Frank M. Tims, Thomas Babor, Jean Donaldson, Howard A Liddle, Janet C. Titus, Yifrah Kaminer, Charles Webb, Nancy Hamilton, Rod Funk

Research output: Contribution to journalArticle

525 Citations (Scopus)

Abstract

This article presents the main outcome findings from two inter-related randomized trials conducted at four sites to evaluate the effectiveness and cost-effectiveness of five short-term outpatient interventions for adolescents with cannabis use disorders. Trial 1 compared five sessions of Motivational Enhancement Therapy plus Cognitive Behavioral Therapy (MET/CBT) with a 12-session regimen of MET and CBT (MET/CBT12) and another that included family education and therapy components (Family Support Network [FSN]). Trial II compared the five-session MET/CBT with the Adolescent Community Reinforcement Approach (ACRA) and Multidimensional Family Therapy (MDFT). The 600 cannabis users were predominately white males, aged 15-16. All five CYT interventions demonstrated significant pre-post treatment during the 12 months after random assignment to a treatment intervention in the two main outcomes: days of abstinence and the percent of adolescents in recovery (no use or abuse/dependence problems and living in the community). Overall, the clinical outcomes were very similar across sites and conditions; however, after controlling for initial severity, the most cost-effective interventions were MET/CBT5 and MET/CBT12 in Trial 1 and ACRA and MET/CBT5 in Trial 2. It is possible that the similar results occurred because outcomes were driven more by general factors beyond the treatment approaches tested in this study; or because of shared, general helping factors across therapies that help these teens attend to and decrease their connection to cannabis and alcohol.

Original languageEnglish
Pages (from-to)197-213
Number of pages17
JournalJournal of Substance Abuse Treatment
Volume27
Issue number3
DOIs
StatePublished - Oct 1 2004

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Cannabis
Family Therapy
Cognitive Therapy
Therapeutics
Cost-Benefit Analysis
Outpatients
Alcohols
Education
Costs and Cost Analysis

Keywords

  • Adolescents
  • Cost-effectiveness
  • Manual-guided therapy
  • Marijuana
  • Treatment effectiveness

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Neuroscience(all)

Cite this

Dennis, M., Godley, S. H., Diamond, G., Tims, F. M., Babor, T., Donaldson, J., ... Funk, R. (2004). The Cannabis Youth Treatment (CYT) Study: Main findings from two randomized trials. Journal of Substance Abuse Treatment, 27(3), 197-213. https://doi.org/10.1016/j.jsat.2003.09.005

The Cannabis Youth Treatment (CYT) Study : Main findings from two randomized trials. / Dennis, Michael; Godley, Susan H.; Diamond, Guy; Tims, Frank M.; Babor, Thomas; Donaldson, Jean; Liddle, Howard A; Titus, Janet C.; Kaminer, Yifrah; Webb, Charles; Hamilton, Nancy; Funk, Rod.

In: Journal of Substance Abuse Treatment, Vol. 27, No. 3, 01.10.2004, p. 197-213.

Research output: Contribution to journalArticle

Dennis, M, Godley, SH, Diamond, G, Tims, FM, Babor, T, Donaldson, J, Liddle, HA, Titus, JC, Kaminer, Y, Webb, C, Hamilton, N & Funk, R 2004, 'The Cannabis Youth Treatment (CYT) Study: Main findings from two randomized trials', Journal of Substance Abuse Treatment, vol. 27, no. 3, pp. 197-213. https://doi.org/10.1016/j.jsat.2003.09.005
Dennis, Michael ; Godley, Susan H. ; Diamond, Guy ; Tims, Frank M. ; Babor, Thomas ; Donaldson, Jean ; Liddle, Howard A ; Titus, Janet C. ; Kaminer, Yifrah ; Webb, Charles ; Hamilton, Nancy ; Funk, Rod. / The Cannabis Youth Treatment (CYT) Study : Main findings from two randomized trials. In: Journal of Substance Abuse Treatment. 2004 ; Vol. 27, No. 3. pp. 197-213.
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