Effectiveness of a self-guided web-based cannabis treatment program: randomized controlled trial
Open accessAbstract
BACKGROUND: Self-help strategies offer a promising way to address problems with access to and stigma associated with face-to-face drug and alcohol treatment, and the Internet provides an excellent delivery mode for such strategies. To date, no study has tested the effectiveness of a fully self-guided web-based treatment for cannabis use and related problems. OBJECTIVES: The current study was a two-armed randomized controlled trial aimed at testing the effectiveness of Reduce Your Use, a fully self-guided web-based treatment program for cannabis use disorder consisting of 6 modules based on cognitive, motivational, and behavioral principles. METHODS: 225 individuals who wanted to cease or reduce their cannabis use were recruited using both online and offline advertising methods and were randomly assigned to receive: (1) the web-based intervention, or (2) a control condition consisting of 6 modules of web-based educational information on cannabis. Assessments of cannabis use, dependence symptoms, and abuse symptoms were conducted through online questionnaires at baseline, and at 6-week and 3-month follow-ups. Two sets of data analyses were undertaken--complier average causal effect (CACE) modeling and intention to treat (ITT). RESULTS: Two thirds (149) of the participants completed the 6-week postintervention assessment, while 122 (54%) completed the 3-month follow-up assessment. Participants in the intervention group completed an average of 3.5 of the 6 modules. The CACE analysis revealed that at 6 weeks, the experimental group reported significantly fewer days of cannabis use during the past month (P=.02), significantly lower past-month quantity of cannabis use (P=.01), and significantly fewer symptoms of cannabis abuse (P=.047) relative to controls. Cannabis dependence symptoms (number and severity) and past-month abstinence did not differ significantly between groups (Ps>.05). Findings at 3 months were similar, except that the experimental group reported significantly fewer and less severe cannabis dependence symptoms (Ps<.05), and past-month quantity of cannabis consumed no longer differed significantly between groups (P=.16). ITT analyses yielded similar outcomes. CONCLUSION: Findings suggest that web-based interventions may be an effective means of treating uncomplicated cannabis use and related problems and reducing the public health burden of cannabis use disorders. TRIAL REGISTRATION: ACTRN12609000856213, Australian New Zealand Clinical Trials Registry.
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At 6-week follow-up, the intervention group presented a significant decrease in days of use, quantity used, and symptoms of abuse.
“6-week follow-up: The Intervention group presents a significant ↓ in days of use, quantity used and symptoms of abuse.”
From Online and Mobile Interventions for Problem Gambling, Alcohol, and Drugs: A Systematic Review (2017) · cites this paper as Rooke et al. (2013)
The decrease in days of use, quantity used, and symptoms of abuse was maintained at 3-month follow-up.
“Maintenance at 3-month follow-up.”
From Online and Mobile Interventions for Problem Gambling, Alcohol, and Drugs: A Systematic Review (2017) · cites this paper as Rooke et al. (2013)
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- Authors
- Rooke, S., Copeland, J., Norberg, M., Hine, D., & McCambridge, J.
- Affiliations
- UNSW Sydney (AU)
- University of New England (US)
- London School of Hygiene & Tropical Medicine (GB)
- Corresponding author
- Rooke, Sally
- Venue
- Journal of Medical Internet Research
- Publisher
- JMIR Publications Inc.
- Published
- 2013-02-15
- Volume
- 15
- Issue
- 2
- Pages
- e26
- ISSN
- 1438-8871 (ISSN-L)
- PMC
- PMC3636012
- OpenAlex
- W2060967263
- Cited by
- 141
- References
- 52
- Citations by year
- 2026: 4 · 2025: 3 · 2024: 7 · 2023: 6 · 2022: 8 · 2021: 15 · 2020: 19 · 2019: 11 · 2018: 15 · 2017: 13 · 2016: 12 · 2015: 13 · 2014: 9 · 2013: 6
- FWCI
- 9.73
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Journal of Medical Internet Research (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- LSHTM Research Online (London School of Hygiene and Tropical Medicine) (acceptedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- RUNE (Research UNE) (submittedVersion)
- Funders
- Wellcome Trust (WT086516MA)
- Topics
- Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
- Social Sciences › Psychology › Applied Psychology › Digital Mental Health Interventions
- Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
- Keywords
- cannabis use disorder, online intervention, self-guided treatment, cannabis use reduction, self-help
- MeSH terms
- Adult, Australia, Marijuana Abuse, Female, Humans, Male, Self Care, Therapy, Computer-Assisted, Health Behavior, Treatment Outcome, Outcome Assessment, Health Care, Telemedicine, Internet, Young Adult
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