ArticlePsychiatry research2022
Geographical variation in hospitalization for psychosis associated with cannabis use and cannabis legalization in the United States: Submit to: Psychiatry Research.
Article in Psychiatry research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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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.
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Who cites it
9 citing papers in PubMed, 20 citations in OpenAlex.
- Emergency department use by individuals with and without psychosis after state-level cannabis legalization and commercialization.Nature. Mental health · 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
- Risk Factors for Late-Onset Psychosis: A Case-Control Study.Schizophrenia bulletin · 2025Article
- Changes in psychosis-related emergency department and hospitalization rates among youth following cannabis legalization in Colorado.Drug and alcohol dependence · 2025Article
- Implementing early psychosis services: Experiences from the laboratory for early psychosis center.Schizophrenia research · 2025Article
- Exploring the impact of drug decriminalization and legalization policies on mental health outcomes: A scoping review.PLOS mental health · 2025Article
- Acute Toxicity and Pharmacokinetic Profile of an EU-GMP-CertifiedPharmaceuticals (Basel, Switzerland) · 2023Article
- State Cannabis Legalization and Psychosis-Related Health Care Utilization.JAMA network open · 2023Article
Corrections and comments
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Authors and funding
5 authors at 4 institutions in 2 countries.
Funding
Abstract
The 2017 National Inpatient Sample database was utilized to investigate the association between cannabis legalization in the United States and hospitalizations for psychosis associated with cannabis use. We compared the odds of hospital discharges for psychosis associated with cannabis use in adults between the Pacific census division (where most states legalized recreational cannabis use) and other divisions using multivariable logistic regression, adjusting for confounders. We calculated a score for each census division representing cannabis legality as the population-weighted sum of state scores: 1=illegal or cannabidiol/low potency cannabis; 2= medical marijuana; and 3=recreational and medical marijuana legalized. Pearson's correlation coefficients (r) quantified the relationship between scores and the proportion of hospitalizations with psychosis associated with cannabis. In 2017, there were an estimated 129,070 hospital discharges for psychosis associated with cannabis use. The Pacific census division had significantly higher odds of discharges than other divisions (adjusted odds ratio 1.55; 95% confidence interval 1.25 - 1.93). There was a significant correlation between the cannabis legality score and proportion of hospital discharges for psychosis associated with cannabis use (r = 0.67, p<0.05). In conclusion, we observed a higher proportion of hospital discharges for psychosis associated with cannabis use in areas with more liberal cannabis legalization laws.
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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.