ArticleCanadian journal of psychiatry. Revue canadienne de psychiatrie2022
Associations Between Canada's Cannabis Legalization and Emergency Department Presentations for Transient Cannabis-Induced Psychosis and Schizophrenia Conditions: Ontario and Alberta, 2015-2019.
Article in Canadian journal of psychiatry. Revue canadienne de psychiatrie, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.
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Who cites it
20 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The implementation and public health impacts of cannabis legalization in Canada: a systematic review.Addiction (Abingdon, England) · 2023Pooled it
- Emergency department use by individuals with and without psychosis after state-level cannabis legalization and commercialization.Nature. Mental health · 2026Article
- How clinicians think about dual disorders: Insights from a case vignette survey.Indian journal of psychiatry · 2026Article
- The prevalence of cannabis use pre-versus post-cannabis legalization in Canada by mental health status: findings from national repeat cross-sectional surveys.Lancet regional health. Americas · 2026Article
- Centering Individuals With Mental Illness as an At-Risk Group in the Era of Cannabis Legalization and Commercialization.Clinical therapeutics · 2026Article
- Changes in psychosis-related emergency department and hospitalization rates among youth following cannabis legalization in Colorado.Drug and alcohol dependence · 2025Article
- Article
- The impact of recreational cannabis legalization on cannabis-related acute care events among adults with schizophrenia.Social psychiatry and psychiatric epidemiology · 2025Article
- Exploring the impact of drug decriminalization and legalization policies on mental health outcomes: A scoping review.PLOS mental health · 2025Article
- Effect of Cannabis Legalization in Canada on the Incidence of Psychosis Consultations in Quebec City's Psychiatric Emergency Services.Canadian journal of psychiatry. Revue canadienne de psychiatrie · 2024Article
- The association between physical availability of cannabis retail outlets and frequent cannabis use and related health harms: a systematic review.Lancet regional health. Americas · 2024Review
- Assessing Cannabis Use in People with Psychosis.Cannabis and cannabinoid research · 2024Review
- Article
- Assessing rates and predictors of cannabis-associated psychotic symptoms across observational, experimental and medical research.Nature. Mental health · 2024Article
- Changes in Cannabis-Attributable Hospitalizations Following Nonmedical Cannabis Legalization in Canada.JAMA network open · 2023Article
- State Cannabis Legalization and Psychosis-Related Health Care Utilization.JAMA network open · 2023Article
- Mental health adverse events with cannabis use diagnosed in the Emergency Department: what are we finding now and are our findings accurate?Frontiers in psychiatry · 2023Review
- Developments and Changes in Primary Public Health Outcome Indicators Associated with the Legalization of Non-Medical Cannabis Use and Supply in Canada (2018): A Comprehensive Overview.International journal of mental health and addiction · 2022Article
- Substance Use in the Population-A Plea for a Balanced Discussion.Deutsches Arzteblatt international · 2022Article
- TheJournal of psychiatry & neuroscience : JPNArticle
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveCannabis legalization in many jurisdictions worldwide has raised concerns that such legislation might increase the burden of transient and persistent psychotic illnesses in society. Our study aimed to address this issue.
methodsDrawing upon emergency department (ED) presentations aggregated across Alberta and Ontario, Canada records (April 1, 2015-December 31, 2019), we employed Seasonal Autoregressive Integrated Moving Average (SARIMA) models to assess associations between Canada's cannabis legalization (via the
resultsED presentations for cannabis-induced psychosis doubled between April 2015 and December 2019. However, across all four SARIMA models, there was no evidence of significant step-function effects associated with cannabis legalization on post-legalization weekly ED counts of: (1) cannabis-induced psychosis [0.34 (95% CI -4.1; 4.8;
conclusionImplementation of Canada's cannabis legalization framework was not associated with evidence of significant changes in cannabis-induced psychosis or schizophrenia ED presentations. Given the potentially idiosyncratic rollout of Canada's cannabis legalization, further research will be required to establish whether study results generalize to other settings.
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