Evidence map›Paper›PMID 37345465›Full record

ArticlePsychological medicine2023

Disparities in cannabis-related emergency department visits across depressed and non-depressed individuals and the impact of recreational cannabis policy in Ontario, Canada.

Chungah Kim, Gabriel John Dusing, Andrew Nielsen, Frank P MacMaster, Katherine Rittenbach, Sara Allin, Patricia O'Campo, Tarra L Penney, Hayley A Hamilton, Maritt Kirst and 1 more

Abstract read
In one paragraph

Article in Psychological medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Chungah KimFaculty of Health, York University, School of Kinesiology and Health Science, Toronto, Ontario, Canada.ORCID 0000-0002-9033-3874
Gabriel John DusingFaculty of Health, York University, School of Kinesiology and Health Science, Toronto, Ontario, Canada.
Andrew NielsenCanadian Institute for Health Information, Toronto, Ontario, Canada.
Frank P MacMasterUniversity of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada.
Katherine RittenbachFaculty of Medicine & Dentistry, Psychiatry Department, University of Alberta, Edmonton, Alberta.
Sara AllinUniversity of Toronto, Dalla Lana School of Public Health, Toronto, Ontario.
Patricia O'CampoSt. Michael's Hospital, Unity Health Toronto, Toronto, Ontario, Canada.
Tarra L PenneyFaculty of Health, York University, School of Kinesiology and Health Science, Toronto, Ontario, Canada.
Hayley A HamiltonCentre for Addiction and Mental Health (CAMH), Toronto, Ontario, Canada.
Maritt KirstDepartment of Psychology, Wilfrid Laurier University, Waterloo, Ontario, Canada.
Antony ChumFaculty of Health, York University, School of Kinesiology and Health Science, Toronto, Ontario, Canada.ORCID 0000-0002-6756-7031

Funding

Canada Research Chairs CRC-2021-00269
6 · The paper itself

Abstract

backgroundRecreational cannabis policies are being considered in many jurisdictions internationally. Given that cannabis use is more prevalent among people with depression, legalisation may lead to more adverse events in this population. Cannabis legalisation in Canada included the legalisation of flower and herbs (phase 1) in October 2018, and the deregulation of cannabis edibles one year later (phase 2). This study investigated disparities in cannabis-related emergency department (ED) visits in depressed and non-depressed individuals in each phase.

methodsUsing administrative data, we identified all adults diagnosed with depression 60 months prior to legalisation (

resultsIn the matched sample (i.e. comparison with non-depressed people similar to the depressed group), people with depression had approximately four times higher risk of cannabis-related ED-visits relative to the non-depressed over the entire period. Phases 1 and 2 were not associated with any changes in the matched depressed and non-depressed groups. In the unmatched sample (i.e. comparison with the non-depressed general population), the disparity between individuals with and without depression is greater. While phase 1 was associated with an immediate increase in ED-visits among the general population, phase 2 was not associated with any changes in the unmatched depressed and non-depressed groups.

conclusionsDepression is a risk factor for cannabis-related ED-visits. Cannabis legalisation did not further elevate the risk among individuals diagnosed with depression.

Indexed as

CannabisAdultCanadaEmergency Service, HospitalHumansOntarioPolicyAcute careCanadacannabiscannabis legalisationdepressionemergency department

Identifiers

PMID37345465
PMCPMC10719623

What OpenQuestion holds

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Registered trials

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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.