Trial reportAnnals of family medicine2017
Cannabis and Young Users-A Brief Intervention to Reduce Their Consumption (CANABIC): A Cluster Randomized Controlled Trial in Primary Care.
Trial report in Annals of family medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 4 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
12 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Health education interventions to reduce cannabis and tobacco smoking-related harms among people who use cannabis: a systematic review.Health education research · 2026Pooled it
- Brief Drug Interventions Delivered in General Medical Settings: a Systematic Review and Meta-analysis of Cannabis Use Outcomes.Prevention science : the official journal of the Society for Prevention Research · 2025Pooled it
- Identifying brief intervention factors to improve cannabis related outcomes in adolescents and young adults: A systematic review of sample characteristics and intervention components.Journal of substance use and addiction treatment · 2024Pooled it
- Efficacy of Brief Intervention for Unhealthy Drug Use in Outpatient Medical Care: a Systematic Review and Meta-analysis.Journal of general internal medicine · 2022Pooled it
- FRAMES protocol versus simple advice for medication-overuse headache: a prospective, randomized, controlled clinical trial.Acta neurologica Belgica · 2021Trial
- A developmental-based motivational intervention to reduce alcohol and marijuana use among non-treatment-seeking young adults: a randomized controlled trial.Addiction (Abingdon, England) · 2018Trial
- What proportion of people who use cannabis in Germany have spoken with their general practitioner about their consumption? A repeated cross-sectional representative population survey.Journal of cannabis research · 2025Article
- Psychosocial wellbeing and risky health behaviors among Syrian adolescent refugees in South Beirut: a study using the HEEADSSS interviewing framework.Frontiers in psychology · 2023Article
- Disparities in functioning from alcohol and cannabis use among a racially/ethnically diverse sample of emerging adults.Drug and alcohol dependence · 2022Article
- Sources of cannabis among young adults and associations with cannabis-related outcomes.The International journal on drug policy · 2020Article
- Adolescent Substance Use Disorder Treatment: an Update on Evidence-Based Strategies.Current psychiatry reports · 2019Review
- Cannabis users: Screen systematically, treat individually. A descriptive study of participants in a randomized trial in primary care.PloS one · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeBrief intervention to reduce cannabis is a promising technique that could be adapted for use in primary care, but it has not been well studied in this setting. We tested the efficacy of a brief intervention conducted by general practitioners among cannabis users aged 15 to 25 years.
methodsWe performed a cluster randomized controlled trial with 77 general practitioners in France. The intervention consisted of an interview designed according to the FRAMES (feedback, responsibility, advice, menu, empathy, self-efficacy) model, while the control condition consisted of routine care.
resultsThe general practitioners screened and followed up 261 young cannabis users. After 1 year, there was no significant difference between the intervention and control groups in the median number of joints smoked per month among all users (17.5 vs 17.5;
conclusionsOur findings suggest that a brief intervention conducted by general practitioners with French young cannabis users does not affect use overall. They do, however, strongly support use of brief intervention for younger users and for moderate users.
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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.