%0 Journal Article %T Trends of poly-substance use among Canadian youth %A Gillian Williams %A Katelyn Battista %A Margaret de Groh %A Scott T. Leatherdale %A Ying Jiang %J Archive of "Addictive Behaviors Reports". %D 2019 %R 10.1016/j.abrep.2019.100189 %X Poly-substance use, increasingly understood as a behaviour with uniquely adverse consequences, is on the rise among Canadian youth. High levels of e-cigarette vaping and the recent legalization of recreational cannabis use may result in an acceleration of this trend. The aim of this work was to characterise changes in youth poly-substance use over time, generate baseline data for future investigations, and highlight areas of interest for policy action %K Youth %K Poly-substance use %K Cigarette smoking %K E-cigarettes %K Alcohol %K Cannabis %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6525276/