BackgroundA wide range of electronic cigarettes (e-cigarettes) are now on the market. We studied e-cigarette awareness and use, determinants and sources of e-cigarettes, the e-liquids used in them and exposure to e-cigarette advertisements among adolescents in Finland. Among smokers, we studied the association of e-cigarette use and interest in smoking cessation.MethodData were obtained from a national survey of 12–18-year-old Finnish adolescents in 2013 (N=3535, response rate 38%). Descriptive statistics and logistic regression analysis were used.ResultsOf the respondents, 85.3% knew what e-cigarettes were; 17.4% had tried them. E-liquids with nicotine were used most often (65.7%); also those who had never tried conventional cigarettes had used them. Of e-cigarette ever users, 8.3% had never tried smoking. Parents’ high level of education, being in employment, and intact family protected against children's e-cigarette use. In the final model, daily smoking (OR 41.35; 95% CI 25.2 to 67.8), snus use (2.96; 2.4–4.0), waterpipe use (2.21; 1.6–3.0), children's vocational education (2.06; 1.4–3.1) and poor school performance (1.92; 1.4–3.0) were associated with e-cigarette experimentation. Those smokers with most experience of e-cigarettes were least likely to consider smoking cessation.ConclusionsAwareness and experimentation with e-cigarettes are high among adolescents, especially in older age groups and boys. Nicotine e-liquids are easy to acquire for youth. Having similar risk factors, e-cigarette use seems to follow the model of conventional smoking initiation. Among adolescent smokers, use of e-cigarettes does not clearly relate to interest in smoking cessation. Preventive policies are needed to protect the youth.

The decline in physical activity among young people has been discussed in the media during recent decades, although the scientific evidence for this has been scarce. The aim of this study was to investigate trends over 30 years in leisure time physical activity of Finnish boys and girls aged 12, 14, 16 and 18 years from 1977 to 2007. The data were obtained from the Finnish Adolescent Health and Lifestyle Survey. In the survey nationwide samples have been drawn every second year (number of respondents has varied from 2832 to 8390) since 1977. Leisure time physical activity was measured through questions concerning organized sport and unorganized leisure time physical activity. Participation in organized sport significantly increased from 1977 to 2007 in both genders. Time ϫ gender interaction was significant, indicating that participation had increased more among girls than among boys. In both genders participation in unorganized leisure time physical activity decreased from 1977 to 1985, increasing thereafter until 2007. The increase from 2003 to 2007 was significant in organized sport but not in unorganized leisure time physical activity. It is concluded that there is an upward trend in Finnish adolescents' leisure time physical activity and in organized sport in particular, and that the increase in activity has been greater in girls than boys.

The aim of this study was to investigate the relationship between youth physical activity and family socioeconomic status (FSES) over 28 years. As a part of the Finnish Adolescent Health and Lifestyle Survey a random sample of 12-, 15- and 18-year-old boys and girls participated in a nation-wide survey by answering questions every second year, from 1977 to 2005, on, among other things, leisure time physical activity and sport participation. Father's education represented FSES. The results showed that there were no significant or only small differences between the high and low FSES groups in unorganised physical activity during the study period. Participation in physical activities organized by the school was not associated with FSES. Participation in youth sport organized by sport clubs was strongly associated with FSES in both sexes. The young people in the high FSES groups participated more than those in the low FSES groups. It was concluded that considerable inequality exists in youth sport participation, that this inequality has been growing during the last decade, and that it is bigger among girls than among boys.

Existing literature on recent trends in adolescent gambling is scarce. The rapidly changing landscape of gambling, together with the generally applied legal age limits, calls for the continuous monitoring of gambling also among the adolescent population. In Finland, the legal gambling age is 18. We examined changes in adolescents’ gambling, gambling expenditure and gambling–related harms from 2011 to 2017. Comparable cross-sectional biennial survey data were collected in 2011, 2013, 2015 and 2017 among 12–18-year-olds (N = 18,857). The main measures were self-reported six-month gambling, average weekly gambling expenditure (€) and harms due to gambling. Data were analyzed using cross-tabulations, χ2-tests and linear regression analysis. A significant decline in gambling among minors (aged 12–16-year-olds) was found (β = − 0.253), while no significant changes were observed among 18-year-olds (who are not targeted by the law). The mean gambling expenditure also declined from 2011 to 2017. Adolescent gamblers experienced significantly less (p = .003) gambling–related harms in 2017 (7.4%) compared to 2011 (13.5%). Adolescent gambling and its related negative consequences have become less prevalent in Finland between 2011 and 2017. Further monitoring is necessary to ascertain whether the positive direction will continue. Also, empirical analyses providing evidence of reasons for the observed trend are warranted.

The purpose of the study was to investigate the time trend of questionnaire-assessed moderate to vigorous physical activity (MVPA) among 12-18-year-old Finnish boys and girls from 1979 to 2005. The MVPA was defined as "at least moderately breathtaking and sweating in leisure time physical activities more than 3 times week." Data were based on the Adolescent Health and Lifestyle Survey, which is a biannual, nation-wide survey on adolescent health and health-related lifestyle in Finland. The nationally representative samples were drawn from the Finnish Population Register Centre. The numbers of participants varied from 2832 to 8390 and the response rates from 91% (girls, 1981) to 58% (boys, 2005). The main results showed that the participation rate in MVPA increased during the study period. The increase was not continuous, but showed an upward trend during the years 2001-2005. The study also revealed that boys participated in MVPA more than girls. However, the gender difference decreased during the study period. Age differences in MVPA were rather small and they decreased during the study period. However, perceived intensity of physical activity was higher among older than younger groups, whereas participation in MVPA was more frequent in younger than older groups. The results supported the findings of some previous studies that reported that especially in Finland the vigorous physical activity among young people had consistently increased. This study gave more information about this phenomenon because the study period was longer, 26 years, and the sample also included older, 16- and 18-year-old boys and girls.