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Record W4410034748 · doi:10.1111/dar.14072

Changes in the Sex/Gender Gap in Cannabis Use in Ontario, Canada From 2001 to 2019

2025· article· en· W4410034748 on OpenAlexafffundabout
Justin Matheson, Yeshambel T. Nigatu, Tara Elton‐Marshall, Sergio Rueda, Farihah Ali, Hayley A. Hamilton, Jürgen Rehm, Bernard Le Foll, Sameer Imtiaz

Bibliographic record

VenueDrug and Alcohol Review · 2025
Typearticle
Languageen
FieldMedicine
TopicCannabis and Cannabinoid Research
Canadian institutionsPublic Health OntarioUniversity of TorontoUniversity of OttawaCentre for Addiction and Mental Health
FundersInstitute of Neurosciences, Mental Health and AddictionCanadian Institutes of Health Research
KeywordsCannabisDemographyConfidence intervalEffects of cannabisCannabis DependenceMental healthMedicinePopulationAddictionGender gapPsychologyPsychiatry

Abstract

fetched live from OpenAlex

INTRODUCTION: Although cannabis use has been historically higher in men than women, some research suggests a narrowing of the sex/gender gap in recent decades. We characterised trends in cannabis use patterns by sex/gender and examined trends in the sex/gender ratios of cannabis use patterns in Ontario, Canada. METHODS: Data were drawn from the Centre for Addiction and Mental Health Monitor Survey, a repeated, population-based, cross-sectional telephone survey of adults in Ontario, Canada (2001-2019). Participants provided self-reports of cannabis use during lifetime and cannabis use during the past 12 months. Male-to-female ratios of both outcomes in each year were calculated. Trends in these outcomes were analysed using join point regression. RESULTS: All outcomes increased among males and females between 2001 and 2019: cannabis use in lifetime (average annual percentage change [AAPC; 95% confidence interval]: 2.0 [0.6-3.3] and 2.9 [1.8-4.0], respectively) and cannabis use during past 12 months (3.5 [2.2-4.9] and 4.7 [2.8-6.6], respectively). The male-to-female ratio of cannabis use during lifetime decreased between 2001 and 2019 (AAPC [95% confidence interval]: -0.7, [-1.0 to -0.4]), unlike cannabis use during past 12 months (-0.5 [-1.8-0.7]). DISCUSSION AND CONCLUSIONS: Our findings suggest a narrowing of the sex/gender gap in cannabis use. Continued monitoring of the sex/gender gap is important to inform health promotion efforts and guide cannabis policy.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.286
Threshold uncertainty score0.419

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.055
GPT teacher head0.328
Teacher spread0.273 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations1
Published2025
Admission routes3
Has abstractyes

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