ArticleBMJ open2019
Prelegalisation patterns and trends of cannabis use among Canadian youth: results from the COMPASS prospective cohort study.
Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
What it found
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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.
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Who cites it
16 citing papers in PubMed.
- 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
- Shifting school health priorities pre-post cannabis legalization in Canada: Ontario secondary school rankings of student substance use as a health-related issue.Health education research · 2022Article
- Article
- Youth substance use service provider's perspectives on use and service access in ontario: time to reframe the discourse.Substance abuse treatment, prevention, and policy · 2022Article
- Adolescent exposure to cannabis marketing following recreational cannabis legalization in Canada: A pilot study using ecological momentary assessment.Addictive behaviors reports · 2021Article
- 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
- Trends in youth cannabis use across cannabis legalization: Data from the COMPASS prospective cohort study.Preventive medicine reports · 2021Article
- Disciplinary Approaches for Cannabis Use Policy Violations in Canadian Secondary Schools.International journal of environmental research and public health · 2021Article
- Prevalence and modes of cannabis use among youth in Canada, England, and the US, 2017 to 2019.Drug and alcohol dependence · 2021Article
- Cannabis use and patterns among middle and older aged Canadians prior to legalization: a sex-specific analysis of the Canadian Tobacco, Alcohol and Drugs Survey.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
- A growing need for youth mental health services in Canada: examining trends in youth mental health from 2011 to 2018.Epidemiology and psychiatric sciences · 2020Article
- Cannabis cessation among youth: rates, patterns and academic outcomes in a large prospective cohort of Canadian high school students.Health promotion and chronic disease prevention in Canada : research, policy and practice · 2020Article
- Recreational Cannabis Legalization in the US and Maternal Use during the Preconception, Prenatal, and Postpartum Periods.International journal of environmental research and public health · 2020Article
- Time Trends in the Co-use of Cannabis and the Misuse of Tranquilizers, Sedatives and Sleeping Pills among Young Adults in Spain between 2009 and 2015.International journal of environmental research and public health · 2019Article
- Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
objectiveCanada federally legalised recreational cannabis use among adults in October 2018. The impact this will have on Canadian youth is cause for concern. The current study examined changes in youth cannabis use over the time prior to legalisation to explore the impact of the beginning federal discourse around legalisation during the 2016/2017 school year.
designCOMPASS, a prospective cohort study based on annual self-administered questionnaires.
settingOntario and Alberta during the first 6 years of the COMPASS study (2012/2013 to 2017/2018).
participantsCanadian grade 9-12 students attending secondary schools participating in COMPASS. In total, 2 30 404 questionnaires were included in the analysis (Y1: 2012/2013, n=24 173; Y2: 2013/2014, n=45 298; Y3: 2014/2015, n=42 355, Y4: 2015/2016, n=40 436; Y5: 2016/2017, n=37 060; Y6: 2017/2018, n=34 897). PRIMARY AND SECONDARY OUTCOME MEASURES: Lifetime cannabis use, past-year cannabis use, weekly cannabis use, ease of access to cannabis and age at first cannabis use.
resultsCannabis never-use decreased between Y5 and Y6. Changes in age at first cannabis use mirrored this trend, with male students consistently starting younger. Cannabis access rates increased from Y4, mainly led by female students. Lifetime and past-year use rates were lowest in Y4 then increased in Y5 and Y6 due to a rise in the occasional use more common among female students, who reported use increases first. Non-white students were more likely use cannabis, with black and Aboriginal students the only two groups consistently reporting more weekly than occasional use, though with opposing trajectories. Overall, Aboriginal students had the highest odds of reporting lifetime, past-year and weekly use among the demographic groups examined.
conclusionAfter a steady decrease in patterns of cannabis among youth over several years, it appears that there has been a gradual increase in cannabis use among youth following the start of discourse around cannabis legalisation, with some populations of youth being at greater risk.
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