ArticleHealth promotion and chronic disease prevention in Canada : research, policy and practice2020
Cannabis cessation among youth: rates, patterns and academic outcomes in a large prospective cohort of Canadian high school students.
Article in Health promotion and chronic disease prevention in Canada : research, policy and practice, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 6 citations in OpenAlex.
- Adolescent with cannabis use disorder and other mental health disorders: does dual disorder worsen school impairment?Journal of cannabis research · 2026Article
- How does cognition change over time in young people who use cannabis recreationally? A narrative review of the longitudinal literature to date.Psychopharmacology · 2026Review
- Exploring Youths' Cannabis Health Literacy Post Legalization: A Qualitative Study.Journal of adolescent research · 2025Article
- Development and initial validation of the cannabis-related psychosis risk literacy scale (CPRL): a multinational psychometric study.BMC psychiatry · 2024Article
- Youth perception of difficulty accessing cannabis following cannabis legalization and during the early and ongoing stages of the COVID-19 pandemic: repeat cross-sectional and longitudinal data from the COMPASS study.Archives of public health = Archives belges de sante publique · 2023Article
- DNA methylation changes associated with cannabis use and verbal learning performance in adolescents: an exploratory whole genome methylation study.Translational psychiatry · 2022Article
- Examining the impact of the early stages of the COVID-19 pandemic period on youth cannabis use: adjusted annual changes between the pre-COVID and initial COVID-lockdown waves of the COMPASS study.BMC public health · 2021Article
- Hit the chronic… physical activity: are cannabis associated mental health changes in adolescents attenuated by remaining active?Social psychiatry and psychiatric epidemiology · 2021Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionFollowing cannabis legalization in Canada, a better understanding of the prevalence of unprompted cannabis use reduction and subsequent effects on youth academic outcomes is needed to inform harm reduction and health promotion approaches.
methodsWe analyzed a longitudinally linked sample (n = 91774) from the COMPASS prospective cohort study of Canadian high school students attending Grades 9-12 in Ontario and Alberta between 2013-2014 and 2016-2017. We investigated the prevalence of spontaneous cannabis use reduction and cessation between grade transitions (Grades 9-10, 10-11, 11-12) and the effect of cessation on academic achievement (current or recent math and English course marks) and rigour (usual homework completion and past-month truancy).
resultsOnly 14.8% of cannabis users decreased their use between grades. Of these, two-thirds made only incremental downward changes, a pattern which held true for all three transitions. Cessation rates from daily and weekly use decreased every year. After cessation, students had better odds than continuing users (OR = 1.23, 95% CI: 1.03- 1.48) and worse odds than never-users (OR = 0.55, 95% CI: 0.31-0.97) for some subcategories of math performance. Students who quit cannabis universally improved class attendance (OR = 2.48, 95% CI: 1.93-3.19) and homework completion (OR = 2.32, 95% CI: 1.85-2.92) compared to continuing users.
conclusionIncreased academic rigour may underlie any improvements seen in academic performance after cannabis cessation. High school students who use cannabis likely need targeted support to facilitate reduction or cessation and subsequent academic recovery. This indicates that a school-based focus on cannabis harm reduction is justified.
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