ArticleJournal of cannabis research2020
A content analysis of internet information sources on medical cannabis.
Article in Journal of cannabis research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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
14 citing papers in PubMed.
- Barriers to accessing prescribed medical cannabis: qualitative insights from people using non-prescribed cannabis for medicinal purposes in the Netherlands.Harm reduction journal · 2025Article
- Changes in Sources of Information About the Risks and Benefits of Cannabis in a National Cohort of U.S. Adults From 2017 to 2021.Journal of studies on alcohol and drugs · 2025Article
- Evaluating Online Cannabis Health Information for Thai Breast Cancer Survivors Using the Quality Evaluation Scoring Tool (QUEST): Mixed Method Study.JMIR cancer · 2024Article
- A Social-Ecological Model for Understanding Cannabis Risks and Promoting Harm Reduction.American journal of public health · 2024Article
- Physicians' Attitudes and Practices Regarding Cannabis and Recommending Medical Cannabis Use.Cannabis and cannabinoid research · 2024Article
- The attitudes, knowledge and confidence of healthcare professionals about cannabis-based products.Journal of cannabis research · 2024Article
- Assessing the preparedness and future-readiness of Malaysian community pharmacists in Klang Valley regarding the use of medical marijuana.BMC health services research · 2024Article
- Perceptions, Attitudes, and Knowledge of Cannabis and its Use: A Qualitative Study among Herbal Heart Study Young Adult Cannabis Consumers in South Florida.Preventive medicine reports · 2024Article
- Consumer perception, knowledge, and uses of cannabidiol.The mental health clinician · 2023Article
- Article
- The quality of health information provided on web sites selling cannabis to consumers in Canada is poor.Harm reduction journal · 2022Article
- The impact of education on attitudes toward medical cannabis.PEC innovation · 2022Article
- Online information on medical cannabis is not always aligned with scientific evidence and may raise unrealistic expectations.Journal of cannabis research · 2022Article
- Association of Tetrahydrocannabinol Content and Price in Herbal Cannabis Products Offered by Dispensaries in California: A Purview of Consumers/Patients.Frontiers in public health · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMedical cannabis users report that their knowledge regarding cannabis is predominantly from their own personal experiences and the Internet.
objectiveWe summarize and describe information found through Internet searches on medical cannabis in English language websites.
methodsWe used terms related to medical cannabis in the Google search engine between November and December 2019. Resulting websites were catalogued and coded for content, including mentions of health and medical conditions, pharmacology, dosage, harmful or adverse effects, harm reduction techniques, cautions or warnings, products for sale, and credentials.
resultsWe coded 344 web pages on 179 unique websites. Cannabis was mentioned for the treatment of 151 different medical and health conditions, only four of the twenty most frequently mentioned conditions have received substantial empirical support for cannabis or cannabinoid treatment. Information content varied widely across sites, only a small proportion of sites included information on pharmacology, dosage, risks, and other aspects that are requirements for pharmaceutical drugs. Information provided was only moderately related to conclusions in the emerging scientific literature.
conclusionsGiven the rise in cannabis use within the U.S. and the reliance on the Internet as a source of information, considerable efforts are needed to provide accurate on-line cannabis education to minimize harms and maximize benefits for individuals and society.
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.