Trial reportAddiction (Abingdon, England)2014
A randomized controlled trial testing the efficacy of a brief cannabis universal prevention program among adolescents in primary care.
Trial report in Addiction (Abingdon, England), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
43 citing papers in PubMed, 3 syntheses or guidelines pooled it, 114 citations in OpenAlex.
- 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
- Pooled it
- Technology-Based Alcohol Interventions in Primary Care: Systematic Review.Journal of medical Internet research · 2019Pooled it
- Using session recordings to understand the content of community-based treatment for childhood anxiety disorders and response to technology-based training.Journal of clinical psychology · 2023Trial
- Sustainability of Adolescent Screening and Brief Intervention Services in Primary Care After Removal of Implementation Supports.Journal of studies on alcohol and drugs · 2023Trial
- Brief interventions to prevent excessive alcohol use in adolescents at low-risk presenting to Emergency Departments: Three-arm, randomised trial of effectiveness and cost-effectiveness.The International journal on drug policy · 2021Trial
- Evaluating the Effectiveness of a Web-Based Program (POP4Teens) to Prevent Prescription Opioid Misuse Among Adolescents: Randomized Controlled Trial.JMIR public health and surveillance · 2021Trial
- Understanding Which Teenagers Benefit Most From a Brief Primary Care Substance Use Intervention.Pediatrics · 2019Trial
- Effect of Middle School Interventions on Alcohol Misuse and Abuse in Mexican American High School Adolescents: Five-Year Follow-up of a Randomized Clinical Trial.JAMA psychiatry · 2018Trial
- Pediatrician and Behavioral Clinician-Delivered Screening, Brief Intervention and Referral to Treatment: Substance Use and Depression Outcomes.The Journal of adolescent health : official publication of the Society for Adolescent Medicine · 2018Trial
- Specialty addiction and psychiatry treatment initiation and engagement: Results from an SBIRT randomized trial in pediatrics.Journal of substance abuse treatment · 2017Trial
- Readiness-to-change as a moderator of a web-based brief intervention for marijuana among students identified by health center screening.Drug and alcohol dependence · 2016Trial
- Linked randomised controlled trials of face-to-face and electronic brief intervention methods to prevent alcohol related harm in young people aged 14-17 years presenting to Emergency Departments (SIPS junior).BMC public health · 2015Trial
- Internet-Based Brief Intervention to Prevent Unhealthy Alcohol Use among Young Men: A Randomized Controlled Trial.PloS one · 2015Trial
- Web-based screening and brief intervention for student marijuana use in a university health center: pilot study to examine the implementation of eCHECKUP TO GO in different contexts.Addictive behaviors · 2014Trial
- Trial
- Inclusion of underserved young people in digital public health interventions for mental health, sexual health and substance use: A systematic review and intervention component analysis.Internet interventions · 2026Review
- Systematic Review: Culturally Tailored Digital Substance Use Prevention Interventions for Black Adolescents.JAACAP open · 2026Review
- Feasibility and acceptability of a web-intervention to prevent alcohol and cannabis-impaired driving among adolescents in driver education.Addiction science & clinical practice · 2024Article
- Accelerating Solutions for the Overdose Crisis: an Effectiveness-Implementation Hybrid Protocol for the HEAL Prevention Cooperative.Prevention science : the official journal of the Society for Prevention Research · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 5 institutions in 1 country.
Funding
Abstract
aimsTo examine the efficacy of a brief intervention delivered by a therapist (TBI) or a computer (CBI) in preventing cannabis use among adolescents in urban primary care clinics.
designA randomized controlled trial comparing: CBI and TBI versus control.
settingUrban primary care clinics in the United States.
participantsResearch staff recruited 714 adolescents (aged 12-18 years) who reported no life-time cannabis use on a screening survey for this study, which included a baseline survey, randomization (stratified by gender and grade) to conditions (control; CBI; TBI) and 3-, 6- and 12-month assessments. MEASUREMENTS: Using an intent-to-treat approach, primary outcomes were cannabis use (any, frequency); secondary outcomes included frequency of other drug use, severity of alcohol use and frequency of delinquency (among 85% completing follow-ups).
findingsCompared with controls, CBI participants had significantly lower rates of any cannabis use over 12 months (24.16%, 16.82%, respectively, P < 0.05), frequency of cannabis use at 3 and 6 months (P < 0.05) and other drug use at 3 months (P < 0.01). Compared with controls, TBI participants did not differ in cannabis use or frequency, but had significantly less other drug use at 3 months (P < 0.05), alcohol use at 6 months (P < 0.01) and delinquency at 3 months (P < 0.01).
conclusionsAmong adolescents in urban primary care in the United States, a computer brief intervention appeared to prevent and reduce cannabis use. Both computer and therapist delivered brief interventions appeared to have small effects in reducing other risk behaviors, but these dissipated over time.
Indexed as
Identifiers
What OpenQuestion holds
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.