Trial reportJournal of affective disorders2018
Medical and non-medical marijuana use in depression: Longitudinal associations with suicidal ideation, everyday functioning, and psychiatry service utilization.
Trial report in Journal of affective disorders, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 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
27 citing papers in PubMed, 3 syntheses or guidelines pooled it, 54 citations in OpenAlex.
- The association between cannabis and depression: an updated Systematic Review and Meta-analysis.Psychological medicine · 2025Pooled it
- Cannabis use and mood disorders: a systematic review.Frontiers in public health · 2024Pooled it
- Systematic review and rationale of using psychedelics in the treatment of cannabis use disorder.Frontiers in psychiatry · 2023Pooled it
- Longitudinal Effects of Cannabis Use on Suicidal Behaviour in Early Adulthood in Washington State, United States and Victoria, Australia.Prevention science : the official journal of the Society for Prevention Research · 2026Article
- Attitudes of Patients with Non-Psychotic Mental Disorders Towards Cannabis After Its Legalization-Comparison with Patients Before Legalization.Brain sciences · 2026Article
- Latent health behavior classes and associations with depressive symptoms and metabolic syndrome among women with and without HIV in the MACS/WIHS Combined Cohort Study.Journal of health psychology · 2026Article
- Centering Individuals With Mental Illness as an At-Risk Group in the Era of Cannabis Legalization and Commercialization.Clinical therapeutics · 2026Article
- Acute and chronic effects of medicinal cannabis use on anxiety and depression in a prospective cohort of patients new to cannabis.Journal of affective disorders · 2025Observational
- Gender Differences in Cannabis as a Mediator Between Distress Factors and Non-Fatal Suicidal Behaviors.International journal of mental health and addiction · 2025Article
- Evaluating search quality and article choice in evidence-based medicine assignments of preclinical students.Journal of the Medical Library Association : JMLA · 2025Article
- Developing an online cannabis store paradigm for Cannabis Regulatory Science.medRxiv : the preprint server for health sciences · 2025Article
- Alcohol and cannabis use for pain management: Translational findings of relative risks, benefits, and interactions.Physiology & behavior · 2025Review
- Co-Occurring Bipolar and Substance Use Disorders: A Review of Impacts, Biopsychosocial Mechanisms, Assessment, and Treatment.Focus (American Psychiatric Publishing) · 2025Review
- The Complex Relationship Between Cannabis Use and Mental Health: Considering the Influence of Cannabis Use Patterns and Individual Factors.CNS drugs · 2025Review
- Alcohol and substance use differentially impact suicidal ideation in a longitudinal cohort of bipolar disorder.Psychiatry research · 2025Article
- Prevalence of cannabidiol use and correlates in U.S. adults.Drug and alcohol dependence reports · 2024Article
- A national study of clinical discussions about cannabis use among Veteran patients prescribed opioids.Journal of cannabis research · 2024Article
- The Effect of Cannabis Use on Depression.Cureus · 2024Article
- Cannabis-Based Medicinal Products in the Management of Emotionally Unstable Personality Disorder (EUPD): A Narrative Review and Case Series.Brain sciences · 2022Article
- Generalized Anxiety Disorder 7-Item (GAD-7) Scores in Medically Authorized Cannabis Patients-Ontario and Alberta, Canada.Canadian journal of psychiatry. Revue canadienne de psychiatrie · 2022Observational
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 2 institutions in 1 country.
Funding
Abstract
backgroundMarijuana use is clinically problematic in depression, and non-medical and medical use may both contribute to barriers to care in this population. Among outpatients with depression, we examined the differential impact of medical or non-medical marijuana use, relative to no-use, on psychopathology and service use over time.
methodParticipants were 307 psychiatry outpatients participating in a trial of drug/alcohol use treatment for depression. Measures of past 30-day marijuana use, depression/anxiety symptoms, psychiatry visits, and functional data related to health status were collected at baseline, 3, 6, and 12 months. Regressions (baseline and 1 year) and growth models (over time) predicted clinical and psychiatry visit outcomes, from medical or non-medical marijuana use (no-use = reference).
resultsAt baseline, 40.0% of the sample used marijuana and more reported non-medical (71.7%) than medical (28.2%) use. Relative to non-users at baseline, patients using medically had worse mental/physical health functioning (p's < 0.05), and non-medical use was associated with higher suicidal ideation (B = 1.08, p = .002), worse mental health functioning (B = -3.79, p = .015), and fewer psychiatry visits (B = -0.69, p = .009). Patients using non-medically over time improved less in depression symptoms (B = 1.49, p = .026) and suicidal ideation (B = 1.08, p = .003) than non-users. LIMITATIONS: Participants were psychiatry outpatients, limiting generalizability.
conclusionsMarijuana use, especially non-medical use, among patients with depression may impede depression symptom improvement while lessening the likelihood of psychiatry visits. Marijuana use and associated barriers to care should receive consideration by depression treatment providers.
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.