Journal article

International differences in patterns of cannabis use among adult cigarette smokers: Findings from the 2018 ITC Four Country Smoking and Vaping Survey

Shannon Gravely, Pete Driezen, Danielle M Smith, Ron Borland, Eric N Lindblom, David Hammond, Ann McNeill, Andrew Hyland, K Michael Cummings, Gary Chan, Mary E Thompson, Christian Boudreau, Nadia Martin, Janine Ouimet, Ruth Loewen, Anne CK Quah, Maciej L Goniewicz, James F Thrasher, Geoffrey T Fong

International Journal of Drug Policy | ELSEVIER | Published : 2020


BACKGROUND: Although evidence shows that co-use of cigarettes and cannabis is common, there is little research examining if co-use patterns vary depending on the regulatory environment for cannabis. This study examined patterns of co-use and perceptions of relative harm among cigarette smokers in four countries with different histories, and at different stages of cannabis legalization. METHODS: Data are from the 2018 International Tobacco Control 4CV Survey and included 10035 adult cigarette smokers from Canada, United States (US), Australia, and England. At the time of the survey, Canada and the US had relatively more permissive cannabis regulations compared to Australia and England. RESULT..

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Awarded by US National Cancer Institute

Awarded by Canadian Institutes of Health Research

Awarded by National Health and Medical Research Council of Australia

Funding Acknowledgements

This study was supported by grants from the US National Cancer Institute (P01 CA200512), the Canadian Institutes of Health Research (FDN-148477), and by the National Health and Medical Research Council of Australia (APP 1106451). GTF was supported by a Senior Investigator Grant from the Ontario Institute for Cancer Research.