Exposure to smoking in films and smoking behaviour among Norwegian 15- to 20-year-olds: a cross-sectional study

Studies from several countries have revealed significant effects of exposure to smoking in films on smoking behaviour and attitudes among adolescents. This study presents the first findings from the Scandinavian cultural region on this topic. With the objective to test for significant adjusted relationships between exposure to smoking in films and established smoking among 15- to 20-year-old respondents, and susceptibility to smoking among non-smokers in the same age group, a cross-sectional study was conducted in June 2008. 807 Norwegian adolescents and young adults answered a web-based questionnaire. Exposure to smoking in films is estimated by asking the respondents if they had seen films from a list of 56 popular film titles of both local and foreign origin from 2007 and 2008. Associations of exposure and smoking behaviour are tested in two logistic regression models. Respondents with the highest exposure to film smoking are more likely to be established smokers than those with no exposure (adjusted odds ratios=2.22, confidence interval=1.04-4.77). Among non-smokers, those with highest exposure to smoking in films are more likely to be susceptible to smoking than those with no exposure (adjusted odds rations=1.55, confidence interval=0.93-2.56). Film smoking is significantly associated with smoking susceptibility and established smoking among Norwegian adolescents and young adults