Dataset Information

Trends and correlates of cannabis use in Canada: a repeated cross-sectional analysis of national surveys from 2004 to 2017.

ABSTRACT:

Background

Cannabis is the most widely used drug in Canada. We examined the trends in past-year cannabis consumption by sociodemographic and geographic characteristics.

Methods

We conducted a repeated cross-sectional analysis of the Canadian Tobacco Use Monitoring Survey, the Canadian Tobacco, Alcohol and Drugs Survey and the Canadian Alcohol and Drug Use Monitoring Survey from 2004 to 2017. Respondents were aged 15 years and older. Past-year cannabis use was analyzed using multivariable logistic regression and segmented logistic regression.

Results

We analyzed 289 823 respondents (51% female) between 2004 and 2017. Between 2004 and 2017, the overall prevalence of cannabis use increased from 12.2% (95% confidence interval [CI] 11.0%-13.5%) to 18.7% (95% CI 16.2%-21.5%) among men and from 6.6% (95% CI 5.9%-7.4%) to 11.1% (95% CI 9.4%-13.0%) among women. The crude rate of change was greater between 2011 and 2017 than that between 2004 and 2011 in men (odds ratio [OR] per annual change: 1.08, 95% CI 1.05-1.11) and women (OR 1.11, 95% CI 1.07-1.15). After adjustment for age, education, tobacco smoking and province, the 2011-2017 trend was stronger in men (adjusted OR 1.24, 95% CI 1.05-1.46), but not in women (adjusted OR 1.13, 95% CI 0.93-1.37). Cannabis use was associated with tobacco smoking (OR 4.94, 95% CI 4.65-5.25). Heterogeneity was found in cannabis use trends by age, education and province. Cannabis use decreased among respondents aged 15-19 years and increased in other age groups.

Interpretation

Cannabis consumption in Canada has increased and varies by sex, age, level of education and geography. Increases vary by sociodemographic factors and may be faster among certain groups. Further studies are warranted post-legalization.

SUBMITTER: Lowry DE

PROVIDER: S-EPMC7428071 | biostudies-literature | 2020 Jul-Sep

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Trends and correlates of cannabis use in Canada: a repeated cross-sectional analysis of national surveys from 2004 to 2017.

Lowry Dana E DE Corsi Daniel J DJ

CMAJ open 20200731 3

<h4>Background</h4>Cannabis is the most widely used drug in Canada. We examined the trends in past-year cannabis consumption by sociodemographic and geographic characteristics.<h4>Methods</h4>We conducted a repeated cross-sectional analysis of the Canadian Tobacco Use Monitoring Survey, the Canadian Tobacco, Alcohol and Drugs Survey and the Canadian Alcohol and Drug Use Monitoring Survey from 2004 to 2017. Respondents were aged 15 years and older. Past-year cannabis use was analyzed using multiv ...[more]

PMID: 32737023

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Dataset Information

Trends and correlates of cannabis use in Canada: a repeated cross-sectional analysis of national surveys from 2004 to 2017.

Background

Methods

Results

Interpretation

Publications

Trends and correlates of cannabis use in Canada: a repeated cross-sectional analysis of national surveys from 2004 to 2017.

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