A controlled trial of an Internet-based intervention program for cannabis users
Open accessAbstract
In the last decade, several programs for the treatment of cannabis-related disorders were developed. Until now, no information is available on the efficacy of Internet-based counseling approaches for this target group. This article describes the evaluation of "quit the shit," a web-based intervention developed to help young people to quit or reduce their cannabis use significantly. Cannabis users seeking web-based treatment were included in a two-arm controlled trial conducted on a website for drug-related information and prevention. After the baseline assessment, members of the treatment condition were randomized to a 50-day intervention program. Other trial participants were put on a waiting list. A post-test was conducted 3 months after randomization. Of all 1,292 subjects included in the trial, a total of 206 participants took part at the post-test. Per-protocol- and intention-to-treat analyses were conducted. Members of the treatment condition showed a significantly stronger reduction in cannabis use (primary outcome) than the control group. In the per-protocol analyses, moderate-to-strong effects were found for the reduction of the frequency and the reduction of the quantity of consumed cannabis. Small-to-moderate effects were observed on the secondary outcomes (use-related self-efficacy, anxiety, depression, and life satisfaction). Despite limitations concerning the interpretation of the results, the intervention seems to offer an effective treatment option for persons with cannabis-related problems.
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At 3-month follow-up, the Quit the Shit program significantly decreased number of days of use.
“At 3-month follow-up, the QTS significantly ↓ number of days of use.”
From Online and Mobile Interventions for Problem Gambling, Alcohol, and Drugs: A Systematic Review (2017) · cites this paper as Tossman et al. (2011)
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- Authors
- Tossmann, D. H.-P., Jonas, B., Tensil, M.-D., Lang, P., & Strüber, E.
- Affiliations
- Delphi–Gesellschaft für Forschung, Beratung und Projektentwicklung, Berlin, Germany.
- Aptiv (Germany) (DE)
- Bundesinstitut für Öffentliche Gesundheit (DE)
- Venue
- Cyberpsychology Behavior and Social Networking
- Publisher
- SAGE Publications
- Published
- 2011-06-08
- Volume
- 14
- Issue
- 11
- Pages
- 673-679
- ISSN
- 2152-2715 (ISSN-L)
- 2152-2723
- OpenAlex
- W1975824508
- Cited by
- 99
- References
- 29
- Citations by year
- 2026: 5 · 2025: 2 · 2024: 6 · 2023: 5 · 2022: 3 · 2021: 8 · 2020: 7 · 2019: 9 · 2018: 11 · 2017: 10 · 2016: 7 · 2015: 7 · 2014: 5 · 2013: 8 · 2012: 6
- FWCI
- 4.55
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Cyberpsychology Behavior and Social Networking (publishedVersion, cc-by)
- PubMed (publishedVersion)
- 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 reduction, online intervention, cannabis-related disorders, youth, online counseling, treatment efficacy, anxiety, depression, life satisfaction
- MeSH terms
- Adolescent, Adult, Marijuana Abuse, Counseling, Female, Follow-Up Studies, Humans, Male, Patient Compliance, Therapy, Computer-Assisted, Program Evaluation, Treatment Outcome, Telemedicine, Statistics, Nonparametric, Internet, Young Adult
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