SynthesisEpidemiologic reviews2012
Marijuana use and motor vehicle crashes.
Synthesis in Epidemiologic reviews, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 149 papers, 5 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
149 citing papers in PubMed, 5 syntheses or guidelines pooled it, 350 citations in OpenAlex.
- Association of driving with blood delta-9-tetrahydrocannabinol: a systematic review.The international journal of neuropsychopharmacology · 2025Pooled it
- Cannabis and Cannabinoids in Adults With Cancer: ASCO Guideline.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2024Guideline
- Effects of Cannabis Legalization on Road Safety: A Literature Review.International journal of environmental research and public health · 2023Pooled it
- The Relationship Between Childhood Physical and Sexual Abuse and Adolescent Cannabis Use: A Systematic Review.Frontiers in psychiatry · 2021Pooled it
- Cannabis Use and Car Crashes: A Review.Frontiers in psychiatry · 2021Pooled it
- Potency-related effects of smoked cannabis on simulated driving performance: a randomized, controlled crossover trial.Scientific reports · 2026Trial
- A randomized pilot trial of a mobile phone-based brief intervention with personalized feedback and interactive text messaging to reduce driving after cannabis use and riding with a cannabis impaired driver.Journal of substance abuse treatment · 2022Trial
- Combined effect of alcohol and cannabis on simulated driving.Psychopharmacology · 2022Trial
- A mobile phone-based brief intervention with personalized feedback and interactive text messaging is associated with changes in driving after cannabis use cognitions in a proof-of-concept pilot trial.Experimental and clinical psychopharmacology · 2021Trial
- Cannabis Use is Associated with Lower Odds of Prescription Opioid Analgesic Use Among HIV-Infected Individuals with Chronic Pain.Substance use & misuse · 2018Trial
- A pilot trial of text-delivered peer network counseling to treat young adults with cannabis use disorder.Journal of substance abuse treatment · 2018Trial
- Pediatric Trauma Trends Before and After Recreational Cannabis Legalization in Nevada: A Retrospective Repeated Cross-Sectional Study.Children (Basel, Switzerland) · 2026Article
- A Practical Framework for Wastewater-Based Monitoring of Substance Use in Public Health Settings.International journal of environmental research and public health · 2026Article
- Recent Advances in the Science of Cannabis-Impaired Driving.Current addiction reports · 2026Review
- Comparison of Δ9-tetrahydrocannabinol in venous and capillary blood following ad libitum cannabis smoking by occasional and daily users.Journal of analytical toxicology · 2025Article
- Cannabis to cope with COVID-19 in college.Journal of American college health : J of ACH · 2025Article
- Attitudes toward driving after cannabis use: a systematic review.Journal of cannabis research · 2024Review
- The effect of cannabis edibles on driving and blood THC.Journal of cannabis research · 2024Article
- State cannabis laws and cannabis positivity among fatally injured drivers.Injury epidemiology · 2024Article
- Effects of acute cannabis inhalation on reaction time, decision-making, and memory using a tablet-based application.Journal of cannabis research · 2024Article
89 more citing papers are in PubMed but not listed here.
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 at 1 institution in 1 country.
Funding
Abstract
Since 1996, 16 states and the District of Columbia in the United States have enacted legislation to decriminalize marijuana for medical use. Although marijuana is the most commonly detected nonalcohol drug in drivers, its role in crash causation remains unsettled. To assess the association between marijuana use and crash risk, the authors performed a meta-analysis of 9 epidemiologic studies published in English in the past 2 decades identified through a systematic search of bibliographic databases. Estimated odds ratios relating marijuana use to crash risk reported in these studies ranged from 0.85 to 7.16. Pooled analysis based on the random-effects model yielded a summary odds ratio of 2.66 (95% confidence interval: 2.07, 3.41). Analysis of individual studies indicated that the heightened risk of crash involvement associated with marijuana use persisted after adjustment for confounding variables and that the risk of crash involvement increased in a dose-response fashion with the concentration of 11-nor-9-carboxy-delta-9-tetrahydrocannabinol detected in the urine and the frequency of self-reported marijuana use. The results of this meta-analysis suggest that marijuana use by drivers is associated with a significantly increased risk of being involved in motor vehicle crashes.
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.