AIMS -To assess the prevalence rates and risk factors of electronic cigarette (e-cigarette) use, with special focus on e-cigarettes containing nicotine, among grade 9 students (aged 15-16 years) in four different municipalities in Sweden. METHODS -A cross-sectional sample of 665 adolescents was collected in April 2014. The data was analysed using binary logistic regression analysis. RESULTS -The results show that 26% of adolescents in this study have smoked e-cigarettes (have ever used), while 19% have smoked e-cigarettes with nicotine or do not know whether or not they contained nicotine. The strongest risk factor for ever having used e-cigarettes (any type or with nicotine) was smoking conventional cigarettes. Having tried cigarettes and having tried snus, as well as using or having used alcohol and having smoked a water pipe were also statistically significant risk factors for ever use of any type of e-cigarettes but not for use of e-cigarettes with nicotine. There was no gender difference. CONCLUSIONS -Our result show that the use of ecigarettes tends to cluster with the use of other substances, such as other tobacco products and alcohol. As a relatively large share of the participating adolescents, more than a fourth, had smoked e-cigarettes, this rather new phenomenon requires monitoring as a part of the tobacco control.

BackgroundThe teenage years are the years when adolescents seek their identity, and part of this involves experimenting with tobacco. The use of tobacco as such, and norms among their friends, is more important to the adolescents than the norms of parents when it comes to using tobacco or not. The aim was to explore the significance of using snus for adolescents, and attitudes to snus, as well as the reasons why they began using snus and what maintained and facilitated the use of snus.MethodsAdolescents who use snus were interviewed in focus groups. The material was analysed using content analysis.ResultsFour groups of boys and one group of girls were interviewed, a total of 27 students from the upper secondary vocational program. Three themes related to the students’ opinions on and experiences of using snus were found: Circumstances pertaining to snus debut indicate what makes them start using snus. Upholding, which focuses on the problem of becoming addicted and development of identity, and approach, where the adolescents reflect on their snus habits in relation to those around them. A number of factors were described as relevant to behaviour and norm building for the development into becoming a snus user. Attitudes and actions from adults and friends as well as – for the boys – development of an identity as a man and a craftsman influenced behaviour.ConclusionsThe results showed that development of identity was of major importance when adolescents start using snus. The adolescents were initially unable to interpret the early symptoms of abstinence problems, but subsequently became well aware of being addicted. Once they were stuck in addiction and in the creation of an image and identity, it was difficult to stop using snus. These factors are important when considering interventions of normative changes and tobacco prevention in schools as well as among parents.

Studying young people's tobacco habits over time gives an understanding of when preventive measures should be implemented. In order for these to influence attitudes, they should be put in place well before tobacco is introduced.