ArticleHealth affairs (Project Hope)2019
Qualifying Conditions Of Medical Cannabis License Holders In The United States.
Article in Health affairs (Project Hope), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 107 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
107 citing papers in PubMed, 5 syntheses or guidelines pooled it, 224 citations in OpenAlex.
- Cannabinoid exposure across substance use disorders: Short-term symptom benefits without sustained therapeutic gains in a tier-weighted systematic review.European psychiatry : the journal of the Association of European Psychiatrists · 2026Pooled it
- Association between state cannabis laws and opioid outcomes: A systematic review.Drug and alcohol dependence · 2026Pooled it
- Pooled it
- A Mapping Literature Review of Medical Cannabis Clinical Outcomes and Quality of Evidence in Approved Conditions in the USA from 2016 to 2019.Medical cannabis and cannabinoids · 2021Pooled it
- Cannabis and Cannabinoids in Mood and Anxiety Disorders: Impact on Illness Onset and Course, and Assessment of Therapeutic Potential.The American journal on addictions · 2020Pooled it
- Cannabis use and sleep quality in daily life: An electronic daily diary study of adults starting cannabis for health concerns.Drug and alcohol dependence · 2023Trial
- Associations of Cannabis and Tobacco Use With Suicide Attempt, Suicide Death, and Overdose Death Among Veterans Prescribed Opioid Analgesics.American journal of preventive medicine · 2026Article
- Inside the Minds of Professional and Elite Athletes: A Qualitative Exploration of Perspectives on Cannabinoid Use in Contact Sports.Sports health · 2026Article
- ΔJournal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2026Article
- The association between state cannabis legalization and non-fatal opioid poisonings among adults with employer-sponsored insurance in the United States.Preventive medicine reports · 2026Article
- Development and Implementation of a Medical Cannabis Clinic Within a Geriatrics Primary Care Clinic: Preliminary Data.Journal of the American Geriatrics Society · 2026Article
- Understanding medical cannabis use internationally: Why definitions and context matter.Addiction (Abingdon, England) · 2025Article
- Nanotechnology for the Efficacious Delivery of Medicinal Cannabis and Pharmaceutical Medicines.Pharmaceuticals (Basel, Switzerland) · 2025Review
- Relationships Between Motives for Cannabis and Cannabidiol Use in People Who Co-Use: Results From the European Web Survey on Drugs.Drug and alcohol review · 2025Article
- Cannabis legalization and cannabis use disorder in United States Veterans Health Administration patients with and without psychiatric disorders, 2005-2022: a repeated cross-sectional study.Lancet regional health. Americas · 2025Article
- Medical Cannabis Use and Healthcare Utilization Among Patients with Chronic Pain: A Causal Inference Analysis Using TMLE.Pharmacy (Basel, Switzerland) · 2025Article
- The Combined Relationship of Prescription Drug Monitoring Program Enactment and Medical Cannabis Laws with Chronic Pain-Related Healthcare Visits.Journal of general internal medicine · 2025Article
- The Cost Effectiveness of Adjunctive Medical Cannabis Therapy in the Treatment of Moderate Post-Traumatic Stress Disorder.Clinical drug investigation · 2025Article
- Feasibility pilot of a novel coaching intervention to optimize cannabis use for chronic pain management among Veterans.Journal of cannabis research · 2025Article
- Measuring the Impact of Medical Cannabis Law Adoption on Employer-Sponsored Health Insurance Costs: A Difference-in-Difference Analysis, 2003-2022.Applied health economics and health policy · 2025Article
47 more citing papers are in PubMed but not listed here.
Corrections and comments
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
The evidence for cannabis's treatment efficacy across different conditions varies widely, and comprehensive data on the conditions for which people use cannabis are lacking. We analyzed state registry data to provide nationwide estimates characterizing the qualifying conditions for which patients are licensed to use cannabis medically. We also compared the prevalence of medical cannabis qualifying conditions to recent evidence from the National Academies of Sciences, Engineering, and Medicine report on cannabis's efficacy in treating each condition. Twenty states and the District of Columbia had available registry data on patient numbers, and fifteen states had data on patient-reported qualifying conditions. Chronic pain is currently and historically the most common qualifying condition reported by medical cannabis patients (64.9 percent in 2016). Of all patient-reported qualifying conditions, 85.5 percent had either substantial or conclusive evidence of therapeutic efficacy. As medical cannabis use continues to increase, creating a nationwide patient registry would facilitate better understanding of trends in use and of its potential effectiveness.
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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.