ArticleCanadian journal of public health = Revue canadienne de sante publique2026
Short-term outcomes of Quebec's ban on flavoured vaping products on adolescent electronic cigarette use: a 2022-2024 COMPASS longitudinal analysis.
Article in Canadian journal of public health = Revue canadienne de sante publique, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesStudies evaluating the outcomes of flavoured vaping product sales bans on adolescent vaping remain scarce, often inconclusive, and of limited generalizability, as they rely predominantly on US data. This study examines the short-term outcomes of such legislation implemented in Quebec (Canada) in October 2023.
methodsA pretest-posttest design with a nonequivalent control group was used, drawing on data from the 2022, 2023 (pre-intervention), and 2024 (post-intervention) waves of the COMPASS study. The exposed group included 4540 adolescents from 68 Quebec schools, and the comparison group included 1491 adolescents from 39 Ontario schools. Indicators derived from self-reported current vaping (past-30-days) were analysed: non-use, daily use, initiation, reduction, mean magnitude of reduction, and cessation.
resultsBetween 2023 and 2024, difference-in-differences analyses revealed no significant between-group differences across all six outcomes examined: non-use (-0.7 percentage point; 95% CI [-2.4, 1.1]), daily use (+ 0.6 point; [-0.2, 1.4]), initiation (+ 1.6 point; [-1.1, 4.3]), reduced use (-9.7 points; [-20.7, 1.3]), mean magnitude of use reduction (+ 0.3 points on the ordinal scale; [-0.1, 0.7]), and cessation (-3.6 points; [-14.9, 7.8]).
conclusionThe results do not provide evidence of short-term outcomes of the Quebec legislation and suggest the need for adjusted approaches. Such adjustments may involve strengthening both the design and implementation of interventions. Future research with longer follow-up periods is needed to identify the most effective measures to protect adolescents.
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