Impact of laws restricting the sale of tobacco to minors on adolescent smoking and perceived obtainability of cigarettes: an intervention–control pre–post study of 19 European Union countries

To estimate the impact of introducing sales restriction laws in Europe by measuring changes in adolescent smoking prevalence and perceived obtainability of cigarettes over time in countries that have recently introduced sales restriction laws (intervention countries). These countries were compared with countries where such laws were already in force (control countries). The secondary aim was to test whether these trends differed between...