Trial reportSubstance abuse treatment, prevention, and policy2012
12-month follow-up of an exploratory 'brief intervention' for high-frequency cannabis users among Canadian university students.
Trial report in Substance abuse treatment, prevention, and policy, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 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
13 citing papers in PubMed, 4 syntheses or guidelines pooled it, 25 citations in OpenAlex.
- Health education interventions to reduce cannabis and tobacco smoking-related harms among people who use cannabis: a systematic review.Health education research · 2026Pooled 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
- Pooled it
- Psychosocial interventions for cannabis use disorder.The Cochrane database of systematic reviews · 2016Pooled it
- A pilot trial of a brief intervention for cannabis use supplemented with a substance-free activity session or relaxation training.Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors · 2024Trial
- Cannabis and Young Users-A Brief Intervention to Reduce Their Consumption (CANABIC): A Cluster Randomized Controlled Trial in Primary Care.Annals of family medicine · 2017Trial
- A Scoping Review of Interventions for U.S. College Students' Harmful Cannabis Use and a Call for a College Cannabis Intervention Matrix.International journal of mental health and addiction · 2024Article
- Facilitators of and barriers to healthcare providers' adoption of harm reduction in cannabis use: a scoping review protocol.BMJ open · 2024Article
- Brief intervention in substance use disorders.Indian journal of psychiatry · 2018Review
- Planning research in psychosocial interventions.Indian journal of psychiatry · 2018Review
- Evidence-based Treatment Options in Cannabis Dependency.Deutsches Arzteblatt international · 2016Review
- Systematic analysis of changes in cannabis use among participants in control conditions of randomised controlled trials.Addictive behaviors reports · 2015Article
- Marijuana: current concepts(†).Frontiers in public health · 2013Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundOne in three young people use cannabis in Canada. Cannabis use can be associated with a variety of health problems which occur primarily among intensive/frequent users. Availability and effectiveness of conventional treatment for cannabis use is limited. While Brief Interventions (BIs) have been shown to result in short-term reductions of cannabis use risks or problems, few studies have assessed their longer-term effects. The present study examined 12-month follow-up outcomes for BIs in a cohort of young Canadian high-frequency cannabis users where select short-term effects (3 months) had previously been assessed and demonstrated.
findingsN=134 frequent cannabis users were recruited from among university students in Toronto, randomized to either an oral or a written cannabis BI, or corresponding health controls, and assessed in-person at baseline, 3-months, and 12-months. N=72 (54%) of the original sample were retained for follow-up analyses at 12-months where reductions in 'deep inhalation/breathholding' (Q=13.1; p< .05) and 'driving after cannabis use' (Q=9.3; p< .05) were observed in the experimental groups. Reductions for these indicators had been shown at 3-months in the experimental groups; these reductions were maintained over the year. Other indicators assessed remained overall stable in both experimental and control groups.
conclusionsThe results confirm findings from select other studies indicating the potential for longer-term and sustained risk reduction effects of BIs for cannabis use. While further research is needed on the long-term effects of BIs, these may be a valuable - and efficient - intervention tool in a public health approach to high-risk cannabis use.
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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.