Smoking perceptions and experimentation among adolescents, before and 1 year after the introduction of plain packaging. Description des Perceptions, Images, et Comportements liés au Tabagisme (DePICT) Study, France, 2016–2017, n=3930, prevalence ratios
| Outcome | Prevalence ratio 2017 versus 2016 * | P values |
| Fear of the health consequences of smoking (totally agree vs somewhat agree, neither agree nor disagree, rather disagree, I don’t agree at all) | 1.06 (1.02 to 1.09) | 0.003 |
| Smoking is dangerous (totally agree vs somewhat agree, neither agree nor disagree, rather disagree, I don’t agree at all) | 1.08 (1.05 to 1.11) | <0.001 |
| Friends accept smoking (completely acceptable, rather acceptable vs no opinion, rather not acceptable, not at all acceptable) | 0.61 (0.54 to 0.70) | <0.001 |
| Family members accept smoking (completely, rather yes vs no opinion, rather not, not at all) | 0.51 (0.44 to 0.60) | <0.001 |
| Smokers are socially less accepted than non-smokers (completely, rather yes vs no opinion, rather not, not at all) | 1.06 (0.95 to 1.18) | 0.33 |
| All smoking experimentation (smokers, former smokers and experimenters vs never-experimenters) | 0.96 (0.93 to 0.98) | 0.002 |
| Current smoking experimentation (current smokers, experimenters vs former smokers, never experimenters) | 0.96 (0.93 to 0.99) | 0.002 |
| Current smoking (yes vs no) | 0.93 (0.78 to 1.11) | 0.42 |
*Adjusted for age, sex, schooling characteristics, parents living together, parental high occupational grade, parental smoking and parental presence during the survey. All analyses except ‘smoking experimentation’ and ‘current tobacco use’ were also adjusted for participants’ smoking status.