From a teacher and school leader perspective: What happened with smoking rules and practices during a three-year smoking preventive intervention? - Findings from the X:IT II study

BACKGROUND

School-based smoking preventive interventions are most effective if they consist of multiple components; one of them being strict anti-smoking rules, i.e., no smoking by anyone at any location during school hours. However, there is a lack of in-depth knowledge about how smoking practices and rules about smoking actually change over time. Therefore, the purpose of this study was to examine how smoking practices changed during a three-year period in which a smoking preventive intervention with strict anti-smoking rules was implemented at schools.

METHODS

We used data from 46 Danish schools that were enrolled in the evaluation of the X:IT II study - a smoking preventive intervention with three main components: one of them being strict anti-smoking rules. We collected questionnaire data among school employees at four timepoints from the autumn of 2017 until April 2020. The questionnaire covered topics regarding students' and employees' tobacco patterns at the school, control with smoking, and aspects of the intervention delivery.

RESULTS

Over time, student smoking rules got stricter; from three out of four at baseline to almost all schools having rules about no student smoking during school hours three years later. Employee smoking rules also changed, although not as much as student rules. Overall, smoking at school grounds seemed to decline - however, student smoking at other locations increased, hence, violating the rule about no smoking during school hours. Enforcement of smoking rules also increased over time.

CONCLUSION

Although implementing and enforcing new rules in a school setting may be difficult, it seemed that most schools in the X:IT II study changed their rules and smoking practices for both students and employees over the three-year intervention period. It seemed, however, that students relocated their smoking to other places than the school or just outside school grounds. Implications of these findings are important to consider in future interventions, i.e., students leaving school during school hours to smoke and the physical separation between those who smoke and those who do not.

Context matters in smoking prevention: evaluating smoke-free school hours in Danish vocational schools

Youth is a crucial period for smoking preventive interventions. School-based interventions targeting the policy level and the sociocultural processes of smoking show promising effects in reducing smoking uptake and prevalence. This study presents findings from the qualitative process evaluation of a smoking preventive intervention, Focus, in the vocational school (VET) setting. Specifically, the study focused on contextual factors affecting the implementation of smoke-free school hours (SFSH). Participant observations and focus groups were conducted in four VETs during the implementation period October-December 2018. The data encompass participant observation field notes (n = 21 school days), student focus groups (n = 8) (aged 16-20), teacher focus groups (n = 5) and semi-structured individual interviews with VET leaders (n = 3). The study found that SFSH was not clearly communicated to students due to the educational structure and chaotic rhythm of the school days, ambivalent attitudes among teachers toward enforcement of smoking rules and lack of clear managerial support. The interplay of these factors counteracted the implementation of SFSH in the VET context. The presented contextual factors are important when interpreting the effectiveness of the Focus intervention and for informing future preventive efforts aiming to reduce smoking among youth in high risk of smoking cigarettes.

Effectiveness of the multi-component intervention 'Focus' on reducing smoking among students in the vocational education setting: a cluster randomized controlled trial

BACKGROUND

Social inequality in smoking remains an important public health issue. Upper secondary schools offering vocational education and training (VET) comprise more students from lower socioeconomic backgrounds and have higher smoking prevalence than general high schools. This study examined the effects of a school-based multi-component intervention on students' smoking.

METHODS

A cluster randomized controlled trial. Eligible participants were schools offering VET basic courses or preparatory basic education in Denmark, and their students. Schools were stratified by subject area and eight schools were randomly allocated to intervention (1,160 invited students; 844 analyzed) and six schools to control (1,093 invited students; 815 analyzed). The intervention program comprised smoke-free school hours, class-based activities, and access to smoking cessation support. The control group was encouraged to continue with normal practice. Primary outcomes were daily cigarette consumption and daily smoking status at student level. Secondary outcomes were determinants expected to impact smoking behavior. Outcomes were assessed in students at five-month follow-up. Analyses were by intention-to-treat and per protocol (i.e., whether the intervention was delivered as intended), adjusted for covariates measured at baseline. Moreover, subgroup analyses defined by school type, gender, age, and smoking status at baseline were performed. Multilevel regression models were used to account for the cluster design. Missing data were imputed using multiple imputations. Participants and the research team were not blinded to allocation.

RESULTS

Intention-to-treat analyses showed no intervention effect on daily cigarette consumption and daily smoking. Pre-planned subgroup analyses showed statistically significant reduction in daily smoking among girls compared with their counterparts in the control group (OR = 0.39, 95% CI: 0.16, 0.98). Per-protocol analysis suggested that schools with full intervention had higher benefits compared with the control group (daily smoking: OR = 0.44, 95% CI: 0.19, 1.02), while no marked differences were seen among schools with partial intervention.

CONCLUSION

This study was among the first to test whether a complex, multicomponent intervention could reduce smoking in schools with high smoking risk. Results showed no overall effects. There is a great need to develop programs for this target group and it is important that they are fully implemented if an effect is to be achieved.

TRIAL REGISTRATION

https://www.isrctn.com/ISRCTN16455577 , date of registration 14/06/2018.

Changes in Cigarette Smoking and Smokeless Tobacco Use During the Coronavirus Disease 2019 Lockdown Period Among Youth and Young Adults in Denmark

INTRODUCTION

Cigarettes and smokeless tobacco (snus and nicotine pouches) are prevalent among youth and young adults in Denmark. Here, we examined the extent of changes in the use of cigarettes and smokeless tobacco during the first Coronavirus Disease 2019 (COVID-19) lockdown in March and April 2020 in Denmark as well as reasons for changed behavior.

AIMS AND METHODS

This study used data from a nationwide survey conducted among 15- to 29-year-olds from January to March 2021 including 13 530 respondents (response rate = 36.0%). Logistic regression analyses assessed the associations between sociodemographic characteristics and the odds of initiating or increasing as well as trying to stop or decreasing cigarette smoking and smokeless tobacco use.

RESULTS

The prevalence of cigarette smoking was 17.8% and 10.5% reported using smokeless tobacco. Around 40% of those currently smoking cigarettes reported smoke on par during the COVID-19 lockdown as before, 24.5% started to smoke or increased their smoking, and 27.4% tried to stop or smoked less. Approximately 37% used smokeless tobacco on the same level as, before the COVID-19 lockdown, 38.8% initiated or used more, and 14.1% tried to stop or used less. Females were more prone to initiate smokeless tobacco use and increase their level of smoking during the lockdown, and younger participants smoked less. More females compared with males changed their smoking behaviors because of their mood, and more younger participants did so because of fewer social gatherings.

CONCLUSION

Although most youths and young adults' tobacco behaviors remained the same during the COVID-19 lockdown, many also increased or decreased their behaviors-especially females and younger participants.

IMPLICATIONS

This study enables the possibility of detecting new tendencies in smoking and the use of smokeless tobacco among subgroups of the population during the COVID-19 lockdown. This knowledge is crucial for identifying which groups of youths are vulnerable to increasing their tobacco use in other pandemic situations and which groups call for special attention after the lockdown period. Future efforts may focus on vulnerable groups affected by the COVID-19 pandemic, such as females, and there is a need to monitor closely whether youth tobacco use changes as society becomes more normalized.

Trends in Use of Alcohol and Cigarettes among Danish Adolescents, 2002-2018: Exclusive and Dual Use

Many young adolescents experiment with substance use which can have substantial health implications later in life. This study examined trends in substance use among Danish adolescents from 2002 to 2018, including exclusive and dual current use of alcohol and cigarettes. Data on 13- and 15-year-olds (N = 15,295) from five comparable cross-sectional Health Behavior in School-aged Children (HBSC) surveys were used. Cochran-Armitage test for trend assessed the development in substance use patterns over time. Overall, a decreasing trend in current use of alcohol and cigarettes was found among Danish adolescents during the 16-year study period: from 71.7% in 2002 to 51.6% in 2018. In 2018, most adolescents (41.8%) currently used alcohol exclusively, 8.6% had a dual current use of cigarettes and alcohol, and 1.3% smoked cigarettes exclusively. Trends in alcohol use differed according to age groups, while no gender-specific trends in substance use were found. Findings suggest that a significant prevention potential in adolescent substance use remains, and future initiatives may focus on dual use of substances as well as tailored efforts to specific subgroups in high risk of using substances.

Socio-economic differences in smoking among adolescents in a school-based smoking intervention: The X:IT II study

Aims: Socio-economic inequalities in health behaviour may be influenced by health interventions. We examined whether the X:IT II intervention, aiming at preventing smoking in adolescence, was equally effective among students from different occupational social classes (OSC). Methods: We used data from the multi-component school-based smoking preventive intervention X:IT II, targeting 13- to 15-year-olds in Denmark. The intervention was tested in 46 schools with 2307 eligible students at baseline (response rate=86.6%) and had three main intervention components: smoke-free school time, smoke-free curriculum and parental involvement. We used a difference-in-difference design and estimated the change in current smoking after the first year of implementation in high versus low OSC. Analyses were based on available cases (N=1190) and imputation of missing data at follow-up (N=1967). Results: We found that 1% of the students from high OSC and 4.9% from low OSC were smokers at baseline (imputed data), and 8.2% of the students from high OSC and 12.2% from low OSC were smokers at follow-up. Difference-in-difference estimates were close to zero, indicating no differential trajectory. Conclusions: As intended, the X:IT II intervention, designed to apply equally to students from all socio-economic groups, did not seem to create different trajectories in current smoking among adolescents in high and low socio-economic groups. To diminish social inequality in health, future studies should carefully consider the ability to affect all socio-economic groups equally, or even to appeal mainly to participants from lower socio-economic groups, as they are often the ones most in need of intervention.

Gender differences in attitudes towards a school-based smoking prevention intervention

AIMS

There are well-known gender differences in smoking, including the pattern of use and the effectiveness of smoking prevention programs. However, little is known about the differences between boys and girls in their attitudes towards smoking prevention interventions. This study explores gender differences in attitudes towards a school-based intervention to prevent smoking.

METHODS

We used data from the X:IT II intervention study conducted in 46 Danish elementary schools.

RESULTS

Compared to boys, girls were more positive towards smoke-free school time, both concerning rules for teachers smoking (odds ratio (OR) = 1.69, 95% confidence interval (CI): 1.35-2.12) and for students smoking (OR = 1.41, 95% CI: 1.13-1.76). No difference was observed in students signing the smoke-free agreement. However, a larger proportion of girls reported that the agreement was a good occasion to talk about smoking with their parents (OR = 1.36, 95% CI: 1.13-1.76). Girls were also more positive towards the smoke-free curriculum (OR = 1.52, 95% CI: 1.19-1.94).

CONCLUSIONS

This study showed that girls were, overall, more positive towards the components of the smoking preventive intervention. Our findings highlight the importance of considering differences in intervention preferences for boys and girls in future health prevention initiatives.

Evaluation of the smoking intervention X:IT after the second year: A randomized controlled trial

Aims:Review studies on the long-term effects of school-based smoking interventions show mixed results. X:IT was a three-year cluster randomized controlled trial to prevent uptake of smoking among Danish students from age 13 years until age 15 years which previously proved effective in preventing smoking after the first year of intervention. The aim of this paper was to conduct the pre-planned analyses of the effects of the X:IT intervention on smoking after the second year. Methods: We used self-reported questionnaire data from students at baseline, first, second, and third follow-up (n at second follow-up=3269, response rate=79.4%). Data from third follow-up were not suitable for analysis. Outcome measure: 'current smoking', dichotomised into smoke daily, weekly, monthly or more seldom versus do not smoke. We performed multilevel, logistic regression analyses of available cases and intention-to-treat (ITT) analyses, replacing missing outcome values by multiple imputation. Results: The prevalence of smoking increased from 5.8% at baseline to 17.0% at second follow-up among students at intervention schools, and from 7.6% to 18.7% among students at control schools. Analyses of available cases and ITT analyses did not support X:IT being effective in preventing smoking after the second year of intervention. Conclusions: Although X:IT was effective after the first year of intervention, we were not able to demonstrate any effects after the second year. Implementation of the intervention was lower in the second year compared to the first year which indicates that the missing effect of the intervention at second follow-up is due to lack of implementation.

Association of School Characteristics and Implementation in the X:IT Study-A School-Randomized Smoking Prevention Program

BACKGROUND

Assessment of implementation is essential for the evaluation of school-based preventive activities. Interventions are more easily implemented in schools if detailed instructional manuals, lesson plans, and materials are provided; however, implementation may also be affected by other factors than the intervention itself-for example, school-level characteristics, such as principal support and organizational capacity. We examined school-level characteristics of schools in groups of high, medium, and low implementation of a smoking prevention intervention.

METHODS

The X:IT study is a school-randomized trial testing a multicomponent intervention to prevent smoking among adolescents. Our data came from electronic questionnaires completed by school coordinators at 96.1% of participating intervention schools (N = 49) at first follow -up.

RESULTS

Schools that implemented the X:IT intervention to a medium or high degree had higher levels of administrative leadership (77.3% and 83.3% vs 42.9%), school climate/organizational health (95.5% and 91.7% vs 66.7%), mission-policy alignment (90.9% and 100.0% vs 71.4%), personnel expertise (81.8% and 75.0% vs 46.7%), school culture (77.3% and 91.7% vs 53.3%), positive classroom climate (91.4% and 96.2% vs 82.9%) compared with low implementation schools.

CONCLUSION

Our findings highlight the importance of considering the school context in future health prevention initiatives.

Tooth brushing among 11- to 15-year-olds in Denmark: combined effect of social class and migration status

OBJECTIVE

Regular tooth brushing in adolescence predicts stable tooth brushing habits later in life. Differences in tooth brushing habits by ethnic background and socioeconomic position have been suggested. We investigated migration status and social class in relation to infrequent tooth brushing both separately and combined.

METHODS

The study population was 11-15 year-olds chosen from a clustered random sample of schools. Univariate and multivariate logistic regression analyses estimated the separate and combined effects of migration status and social class on less than twice daily tooth brushing.

RESULTS

10,607 respondents: a response rate of 88.3%. Boys of lower social class had higher odds ratio (OR) of infrequent tooth brushing than girls: 1.98 (95% confidence interval 1.62-2.41) vs 1.80 (1.53-2.24). Immigrants and descendants had higher odds compared to adolescents of Danish origin: immigrant boys OR 1.39 (1.05-1.89), girls OR 1.92 (1.47-2.50); descendant boys OR 2.53 (1.97-3.27), girls OR 2.56 (2.02-3.35). Analyses of the combined effect of social class and migration status showed that the social gradient in tooth brushing habits observed among ethnic Danes cannot be found among groups of immigrants and descendants.

CONCLUSION

The study shows that both non-Danish origin and low social class increases the risk of infrequent tooth brushing among school-aged children. The study calls for in depth analyses of the processes which influence young people's tooth brushing habits. Further, there is a need to strengthen the promotion of appropriate tooth brushing habits of minority and low social class youths.