Trial reportAddiction science & clinical practice2020
Guided web-based treatment program for reducing cannabis use: a randomized controlled trial.
Trial report in Addiction science & clinical practice, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02408640 (Internet-Based Treatment for Individuals With Regular Cannabis Use), which is not on this map. Cited by 18 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Internet-Based Treatment for Individuals With Regular Cannabis Use: A Randomized Controlled Trial
Who cites it
18 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Digitally Delivered Cognitive Behavioral Interventions for Alcohol and Other Drug Use: Meta-Analysis Across Consumption and Psychosocial Outcomes.JMIR mental health · 2026Pooled it
- Prevalence of Dropout and Influencing Factors in Digital Psychosocial Intervention Trials for Adult Illicit Substance Users: Systematic Review and Meta-Analysis.Journal of medical Internet research · 2025Pooled it
- Digital Interventions for Recreational Cannabis Use Among Young Adults: Systematic Review, Meta-Analysis, and Behavior Change Technique Analysis of Randomized Controlled Studies.Journal of medical Internet research · 2024Pooled it
- Acceptability, Feasibility, and Outcome Responsiveness of the Joint Effort Mobile App for Promoting Lower-Risk Cannabis Use Among Young Adults: Pilot Randomized Controlled Trial.JMIR mHealth and uHealth · 2026Trial
- Engagement patterns among users of a digital intervention to reduce cannabis use: a latent class analysis.Internet interventions · 2026Article
- Lessons learned: challenges in recruiting and engaging people with heavy cannabis use for online interventions in Canada.Journal of cannabis research · 2026Article
- Planning for successful participant recruitment and retention in trials of behavioural interventions: Feasibility randomised controlled trial of the Wrapped intervention.PLOS digital health · 2025Article
- Evaluating Perceptions of the CANreduce 2.0 eHealth Intervention for Cannabis Use: Focus Group Study.Journal of medical Internet research · 2025Article
- Introducing and Evaluating the Effectiveness of Online Cognitive Behavior Therapy for Gambling Disorder in Routine Addiction Care: Comparative Cohort Study.Journal of medical Internet research · 2024Article
- Is internet-based cognitive behavioral therapy for alcohol use disorder equally effective for men and women? Implications of a secondary analysis of a clinical trial.Frontiers in psychiatry · 2024Article
- Reducing Cannabis Use in Young Adults With Psychosis Using iCanChange, a Mobile Health App: Protocol for a Pilot Randomized Controlled Trial (ReCAP-iCC).JMIR research protocols · 2022Article
- Successful outcomes with low-threshold intervention for cannabis use disorders in Norway - an observational study.PloS one · 2022Observational
- Applications of technology in the assessment and treatment of cannabis use disorder.Frontiers in psychiatry · 2022Review
- Promoting self-change in cannabis use disorder: Findings from a randomized trial.Frontiers in psychiatry · 2022Article
- Online personalized feedback intervention to reduce risky cannabis use. Randomized controlled trial.Internet interventions · 2021Article
- Information technology and addiction science: promises and challenges.Addiction science & clinical practice · 2021Article
- ICan, an Internet-based intervention to reduce cannabis use: study protocol for a randomized controlled trial.Trials · 2021Article
- Impact of Users' Attitudes Toward Anonymous Internet Interventions for Cannabis vs. Alcohol Use: A Secondary Analysis of Data From Two Clinical Trials.Frontiers in psychiatry · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
Abstract
backgroundThe aim of this study was to investigate the effects of a web-based treatment program with therapist guidance for adults and adolescents with regular cannabis use from the general population.
methodsA double blinded randomized controlled trial with a parallel group design was conducted (intervention group n = 151, wait-list control group n = 152). Follow-up 12 weeks from treatment commencement of a 13-module intervention. The primary outcome was frequency of cannabis use. Time by group interaction effects were modeled using generalized estimated equations and the instrumental variable approach was used to estimate the effect of intervention adherence.
resultsAt follow-up, the intention to treat (ITT) analyses did not show any significant time by group effects. A significant association between intervention adherence and scores on the cannabis abuse screening test (CAST) was found. Secondary analysis excluding participants who had received other professional help revealed time by group effects for secondary outcomes gram cannabis consumed past week, number of dependency criteria and CAST score. Due to methodological limitations, these latter results should be interpreted with caution.
conclusionsIn this study we did not find a web-based treatment program with therapist guidance to be more effective than a waiting-list in reducing frequency of cannabis use. Trial registration The trial was pre-registered at ClinicalTrials.gov (NCT02408640) April 3, 2015.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.