• Am J Prev Med · May 2024

    Social norms for cannabis use following non-medical legalization in Canada.

    • Lauren Winfield-Ward and David Hammond.
    • School of Public Health Sciences, University of Waterloo, Waterloo, Ontario, Canada.
    • Am J Prev Med. 2024 May 1; 66 (5): 809818809-818.

    IntroductionSocial norms play an important role in cannabis use; however, there is little evidence on how social norms change in jurisdictions that legalize cannabis. This study examined trends in social norms before and after legalization of nonmedical cannabis in Canada in 2018.MethodsData are from the International Cannabis Policy Study, a series of cross-sectional surveys conducted annually with Canadian respondents aged 16-65 years. Analyses were conducted in 2023 and included data from 58,045 respondents across 4 waves: the year immediately before legalization (2018) and 3 post-legalization waves (2019-2021). Regression models examined trends in injunctive norms (perceived approval of cannabis) and comfort in using cannabis in six different social contexts, adjusting for cannabis use frequency, medical authorization, and sociodemographic covariates.ResultsPerceived social approval of cannabis use and comfort using cannabis in different social contexts was highest among males, frequent cannabis consumers, and those who reported medical authorization (p<0.05 in all cases). No changes in perceived approval were observed across years, except a temporary decrease in 2020 versus 2018 (OR=0.87, 95% CI=0.80, 0.95). Modest increases in comfort of using cannabis in 6 different social contexts were observed in 2019 (ß=0.10, p=0.001), 2020 (ß=0.10, p=0.001), and 2021 (ß=0.12, p<0.001) versus in 2018.ConclusionsSocial norms have remained relatively stable after nonmedical legalization in Canada, with only modest increases in comfort of using cannabis in different social settings. The findings may reflect widespread cannabis use in Canada prior to nonmedical legalization in 2018 as well as comprehensive restrictions on promotion and advertising.Copyright © 2023 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

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