Evidence map›Paper›PMID 38621782›Full record

ArticleCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne2024

Opioid-related deaths between 2019 and 2021 across 9 Canadian provinces and territories.

Shaleesa Ledlie, David N Juurlink, Mina Tadrous, Muhammad Mamdani, J Michael Paterson, Tara Gomes

Open access · goldAbstract read
In one paragraph

Article in CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
19.0field-weighted citation impact, top 1% of its field
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

17 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
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  7. Socioeconomic inequities in drug poisoning deaths in Canada.Canadian journal of public health = Revue canadienne de sante publique · 2026
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  14. Sur la route des surdoses: un portrait canadien.Canadian journal of public health = Revue canadienne de sante publique · 2025
    Article
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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

6 authors at 3 institutions in 3 countries.

Shaleesa LedlieLi Ka Shing Knowledge Institute (Ledlie, Mamdani, Gomes), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Ledlie, Tadrous, Mamdani, Gomes), University of Toronto; ICES (Ledlie, Juurlink, Tadrous, Paterson, Gomes); Institute for Health Policy, Management and Evaluation (Juurlink, Mamdani, Paterson, Gomes), University of Toronto; Sunnybrook Research Institute (Juurlink), Toronto, Ont.
David N JuurlinkLi Ka Shing Knowledge Institute (Ledlie, Mamdani, Gomes), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Ledlie, Tadrous, Mamdani, Gomes), University of Toronto; ICES (Ledlie, Juurlink, Tadrous, Paterson, Gomes); Institute for Health Policy, Management and Evaluation (Juurlink, Mamdani, Paterson, Gomes), University of Toronto; Sunnybrook Research Institute (Juurlink), Toronto, Ont.
Mina TadrousLi Ka Shing Knowledge Institute (Ledlie, Mamdani, Gomes), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Ledlie, Tadrous, Mamdani, Gomes), University of Toronto; ICES (Ledlie, Juurlink, Tadrous, Paterson, Gomes); Institute for Health Policy, Management and Evaluation (Juurlink, Mamdani, Paterson, Gomes), University of Toronto; Sunnybrook Research Institute (Juurlink), Toronto, Ont.
Muhammad MamdaniLi Ka Shing Knowledge Institute (Ledlie, Mamdani, Gomes), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Ledlie, Tadrous, Mamdani, Gomes), University of Toronto; ICES (Ledlie, Juurlink, Tadrous, Paterson, Gomes); Institute for Health Policy, Management and Evaluation (Juurlink, Mamdani, Paterson, Gomes), University of Toronto; Sunnybrook Research Institute (Juurlink), Toronto, Ont.
J Michael PatersonLi Ka Shing Knowledge Institute (Ledlie, Mamdani, Gomes), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Ledlie, Tadrous, Mamdani, Gomes), University of Toronto; ICES (Ledlie, Juurlink, Tadrous, Paterson, Gomes); Institute for Health Policy, Management and Evaluation (Juurlink, Mamdani, Paterson, Gomes), University of Toronto; Sunnybrook Research Institute (Juurlink), Toronto, Ont.
Tara GomesLi Ka Shing Knowledge Institute (Ledlie, Mamdani, Gomes), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Ledlie, Tadrous, Mamdani, Gomes), University of Toronto; ICES (Ledlie, Juurlink, Tadrous, Paterson, Gomes); Institute for Health Policy, Management and Evaluation (Juurlink, Mamdani, Paterson, Gomes), University of Toronto; Sunnybrook Research Institute (Juurlink), Toronto, Ont. Tara.Gomes@unityhealth.to.
St Michael's Hospital · GBSunnybrook Health Science Centre · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe drug toxicity crisis continues to accelerate across Canada, with rapid increases in opioid-related harms following the onset of the COVID-19 pandemic. We sought to describe trends in the burden of opioid-related deaths across Canada throughout the pandemic, comparing these trends by province or territory, age, and sex.

methodsWe conducted a repeated cross-sectional analysis of accidental opioid-related deaths between Jan. 1, 2019, and Dec. 31, 2021, across 9 Canadian provinces and territories using aggregated national data. Our primary measure was the burden of premature opioid-related death, measured by potential years of life lost. Our secondary measure was the proportion of all deaths attributable to opioids; we used the Cochrane-Armitage test for trend to compare proportions.

resultsBetween 2019 and 2021, the annual number of opioid-related deaths increased from 3007 to 6222 and years of life lost increased from 126 115 to 256 336 (from 3.5 to 7.0 yr of life lost per 1000 population). In 2021, the highest number of years of life lost was among males (181 525 yr) and people aged 30-39 years (87 045 yr). In 2019, we found that 1.7% of all deaths among those younger than 85 years were related to opioids, rising to 3.2% in 2021. Significant increases in the proportion of deaths related to opioids were observed across all age groups (

interpretationAcross Canada, the burden of premature opioid-related deaths doubled between 2019 and 2021, representing more than one-quarter of deaths among younger adults. The disproportionate loss of life in this demographic group highlights the critical need for targeted prevention efforts.

Indexed as

Analgesics, OpioidPandemicsAdultCanadaCross-Sectional StudiesHumansMaleMortality, PrematureAnalgesics, Opioid

Identifiers

PMID38621782
PMCPMC11019600
OpenAlexW4394797859

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.