The contribution of SARS-CoV-2 to the burden of acute respiratory infections in winter season 2022/2023: results from the DigiHero study.

OBJECTIVES: In winter of 2022/2023 SARS-CoV-2 had developed into one of many seasonal respiratory pathogens, causing an additional burden of acute respiratory infections (ARIs). Although testing was still widely used, many positive tests were not reported for the official statistics. Using data from a population-based cohort, we aimed to investigate the contribution of SARS-CoV-2 to the burden of ARI. METHODS: Over 70,000 participants of the German population-based DigiHero study were invited to a questionnaire about the number and time point of ARI and SARS-CoV-2 test results in winter 2022/2023. We calculated the incidence of non-severe acute respiratory syndrome (SARS) ARI, the additional contribution of SARS-CoV-2, and extrapolated the age-specific estimates to obtain the total burden of SARS-CoV-2 in Germany. RESULTS: For the winter of 2022/2023, 37,708 participants reported 54,813 ARIs, including 9358 SARS-CoV-2 infections. This translated into a cumulative incidence of 145 infections/100 persons for all ARIs, 120 infections/100 persons for non-SARS ARI, and 25 infections/100 persons for SARS ARI (+21%). CONCLUSIONS: Our estimate for ARI related to SARS-CoV-2 is consistent with the difference in all ARI between pre-pandemic years and 2022/2023. This additional burden should be considered, particularly, with respect to the implications for the work force.

Trends in health inequalities in childhood and adolescence in Germany: Results of the HBSC study 2009/10 - 2022.

Background: Many studies have identified health inequalities in childhood and adolescence. However, it is unclear how these have developed in recent years, particularly since the COVID-19 pandemic. Methods: Analyses are based on the German data from the international Health Behaviour in School-aged Children (HBSC) study from 2009/10 (n = 5,005), 2013/14 (n = 5,961), 2017/18 (n = 4,347), and 2022 (n = 6,475). A total of 21,788 students aged approximately between 11 and 15 years were included. Socioeconomic status (SES) was assessed using the Family Affluence Scale (FAS). Several health indicators were analysed stratified by gender using bivariate and multivariate analysis methods. Results: In 2022, there are clear socioeconomic inequalities in life satisfaction, self-rated health, fruit and vegetable consumption, and physical activity. These inequalities remained largely constant or increased between 2009/10 and 2022. Between 2017/18 and 2022, no significant changes in inequalities were found. Conclusions: Health inequalities are persistent and reduce the chances of growing up healthy. There is no evidence that inequalities in the analysed outcomes have changed during the pandemic period (between 2017/18 and 2022). Rather, the changes in the health indicators seem to affect all adolescents in a similar way.

Health literacy of students in Germany - Results of the HBSC study 2022.

Background: Health literacy (HL) encompasses knowledge and skills for dealing critically and confidently with health information in individual and social contexts. Current studies show that a high proportion of children and adolescents have limited health literacy, depending on aspects of their social background. Health literacy is considered an important factor influencing health. Little is known about the development of health literacy over time and its connection with psychosomatic complaints in young people. Methods: Based on the results of the Health Behaviour in School-aged Children (HBSC) study, this article focusses on the level of HL in 11-, 13-, and 15-year-old students (N = 6,475) over time and taking social differences into account. Finally, the relationship between HL and psychosomatic complaints is analysed. Univariate, bivariate, and multivariate analyses were carried out for this purpose. Results: At 24.4 %, slightly more students have low HL in 2022 than in 2017/18 (21.4 %). There are differences in HL according to gender, age, type of school, and family affluence. Low HL is associated with a high psychosomatic burden. Conclusions: The results highlight the need for target group-specific measures to promote young people's HL, which address individual and organisational aspects of HL.

Concept and methodology of the Health Behaviour in School-aged Children (HBSC) study - Insights into the current 2022 survey and trends in Germany.

Background: Health Behaviour in School-aged Children (HBSC) is one of the largest international studies on child and adolescent health and cooperates with the World Health Organization (WHO). In Germany, adolescents aged 11, 13 and 15 are surveyed every four years about their health, health behaviour and social conditions. This article describes the HBSC study and in particular the methodology of the current 2022 survey and prior surveys conducted between 2009/10 and 2017/18. Method: 174 schools with a total of 6,475 students participated in the 2022 survey. The survey was conducted using questionnaires and covered a wide range of topics (including mental health, physical activity, bullying experiences, social determinants of health and experiences related to COVID-19). The 2022 survey was complemented by a school principal survey (N = 160). In addition to the current sample, the samples of the three previous surveys with representative data for Germany are presented: 2009/10 (N = 5,005), 2013/14 (N = 5,961) and 2017/18 (N = 4,347). Discussion: The health of children and adolescents is of great public health importance. The HBSC study makes a substantial contribution by providing internationally comparable results, analysing trends, and providing stakeholders with comprehensive and representative health monitoring data.

Subjective health and psychosomatic complaints of children and adolescents in Germany: Results of the HBSC study 2009/10 - 2022.

Background: Subjective health and well-being are important health indicators in childhood and adolescence. This article shows current results and trends over time between 2009/10 and 2022. Methods: The Health Behaviour in School-aged Children (HBSC) study examined subjective health, life satisfaction and psychosomatic complaints of N = 21,788 students aged 11 to 15 years in the school years 2009/10, 2013/14, 2017/18 and in the calendar year 2022. Multivariate regression analyses show the associations between sociodemographic characteristics and well-being in 2022, as well as trends since 2009/10. Results: The majority of children and adolescents indicate a good subjective health and high life satisfaction. About half of the girls and one third of the boys report multiple psychosomatic health complaints, with a clear increase over time. Older adolescents, girls and gender diverse adolescents are at an increased risk of poor well-being. Subjective health and life satisfaction varied between 2009/10 and 2022, with a significant deterioration between 2017/18 and 2022. Conclusions: The high proportion of children and adolescents with psychosomatic complaints, as well as the observed gender and age differences, underline the need for target group-specific prevention, health promotion and continuous health monitoring.

Insights into early recovery from Long COVID-results from the German DigiHero Cohort.

65 million people worldwide are estimated to suffer from long-term symptoms after their SARS-CoV-2 infection (Long COVID). However, there is still little information about the early recovery among those who initially developed Long COVID, i.e. had symptoms 4-12 weeks after infection but no symptoms after 12 weeks. We aimed to identify associated factors with this early recovery. We used data from SARS-CoV-2-infected individuals from the DigiHero study. Participants provided information about their SARS-CoV-2 infections and symptoms at the time of infection, 4-12 weeks, and more than 12 weeks post-infection. We performed multivariable logistic regression to identify factors associated with early recovery from Long COVID and principal component analysis (PCA) to identify groups among symptoms. 5098 participants reported symptoms at 4-12 weeks after their SARS-CoV-2 infection, of which 2441 (48%) reported no symptoms after 12 weeks. Men, younger participants, individuals with mild course of acute infection, individuals infected with the Omicron variant, and individuals who did not seek medical care in the 4-12 week period after infection had a higher chance of early recovery. In the PCA, we identified four distinct symptom groups. Our results indicate differential risk of continuing symptoms among individuals who developed Long COVID. The identified risk factors are similar to those for the development of Long COVID, so people with these characteristics are at higher risk not only for developing Long COVID, but also for longer persistence of symptoms. Those who sought medical help were also more likely to have persistent symptoms.

The role of mesolevel characteristics of the health care system and socioeconomic factors on health care use - results of a scoping review.

BACKGROUND: Besides macrolevel characteristics of a health care system, mesolevel access characteristics can exert influence on socioeconomic inequalities in healthcare use. These reflect access to healthcare, which is shaped on a smaller scale than the national level, by the institutions and establishments of a health system that individuals interact with on a regular basis. This scoping review maps the existing evidence about the influence of mesolevel access characteristics and socioeconomic position on healthcare use. Furthermore, it summarizes the evidence on the interaction between mesolevel access characteristics and socioeconomic inequalities in healthcare use. METHODS: We used the databases MEDLINE (PubMed), Web of Science, Scopus, and PsycINFO and followed the 'Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols extension for scoping reviews (PRISMA-ScR)' recommendations. The included quantitative studies used a measure of socioeconomic position, a mesolevel access characteristic, and a measure of individual healthcare utilisation. Studies published between 2000 and 2020 in high income countries were considered. RESULTS: Of the 9501 potentially eligible manuscripts, 158 studies were included after a two-stage screening process. The included studies contained a wide spectrum of outcomes and were thus summarised to the overarching categories: use of preventive services, use of curative services, and potentially avoidable service use. Exemplary outcomes were screening uptake, physician visits and avoidable hospitalisations. Access variables included healthcare system characteristics such as physician density or distance to physician. The effects of socioeconomic position on healthcare use as well as of mesolevel access characteristics were investigated by most studies. The results show that socioeconomic and access factors play a crucial role in healthcare use. However, the interaction between socioeconomic position and mesolevel access characteristics is addressed in only few studies. CONCLUSIONS: Socioeconomic position and mesolevel access characteristics are important when examining variation in healthcare use. Additionally, studies provide initial evidence that moderation effects exist between the two factors, although research on this topic is sparse. Further research is needed to investigate whether adapting access characteristics at the mesolevel can reduce socioeconomic inequity in health care use.

Regional Differences in Uptake of Vaccination against COVID-19 and Influenza in Germany: Results from the DigiHero Cohort.

During the COVID-19 pandemic in Germany, vaccination uptake exhibited considerable regional disparities. To assess the factors contributing to this variation, we examined the association of sociodemographic variables with COVID-19, COVID-19 booster, and influenza vaccination status within a cohort of 37,078 participants from 13 German federal states in the digital health cohort study commonly known as DigiHero. Our findings revealed variations in vaccination rates based on sociodemographic factors. However, these factors had limited explanatory power regarding regional differences in vaccine uptake. In contrast, we found substantial correlations between regional support of specific parties during the last local elections and the vaccination uptake at the level of each administrative district. In conclusion, sociodemographic factors alone did not suffice to explain the regional disparities in vaccine uptake. Political stances can play a major role, although the current investigation did not assess individual political orientations but rather used only an ecological approach.

Association between virus variants, vaccination, previous infections, and post-COVID-19 risk.

OBJECTIVES: The SARS-CoV-2 Omicron variant has spread rapidly and has been the dominant variant since 2022. The course of acute infection, in a vaccinated population, with Omicron is milder compared with earlier variants. However, little is known about how the occurrence of long-term symptoms after Omicron infection compared with other variants is modulated by previous infections and/or vaccinations. METHODS: Participants of the DigiHero study provided information about their SARS-CoV-2 infections, vaccinations, and symptoms 12 or more weeks after infection (post-COVID-19 condition - PCC). RESULTS: Participants infected with wildtype SARS-CoV-2 had the highest PCC risk (adjusted odds ratio [aOR] 6.44, 95% confidence interval (CI): 5.49; 7.56), followed by participants infected with Alpha and Delta compared with the reference group (individuals infected with Omicron having received three or more vaccinations). Among those infected with a specific variant, the number of preceding vaccinations was not associated with a risk reduction for PCC, whereas previous infection was strongly associated with a lower PCC risk (aOR 0.14, 95% CI 0.07; 0.25). CONCLUSIONS: While infection with Omicron is less likely to result in PCC compared with previous variants, lack of protection by vaccination suggests a substantial challenge for the healthcare system during the early endemic period. In the midterm, the protective effects of previous infections can reduce the burden of PCC.

Anxiety, depressive symptoms, and distress over the course of the war in Ukraine in three federal states in Germany.

Introduction: The Russian invasion of Ukraine and the resulting consequences are in the center of political discussions, media, and likely individual thinking of the population in Germany. Yet, the impact of this prolonged exposure on mental health is not known hitherto. Methods: Using the population based cohort study DigiHero from three federal states (Saxony-Anhalt, Saxony, and Bavaria), we assessed anxiety levels (GAD-7), depressive symptoms (PHQ-9), and distress (modified PDI) in the first weeks of war and 6 months later. Results: Of those 19,432, who responded in the first weeks of war, 13,934 (71.1%) responded also 6 months later. While anxiety and emotional distress decreased during the 6 months, their average scores were still elevated, and a substantial fraction of respondents displayed clinically relevant sequelae. Persons from low-income households were especially affected, specifically by fears related to the personal financial situation. Those who reacted with a particularly strong fear in the beginning of war were more likely to have persistent clinically relevant symptoms of depression and anxiety also 6 months later. Discussion: The Russian invasion of Ukraine is accompanied by continuing impairment of mental health in the German population. Fears surrounding the personal financial situation are a strong determinant.

Study protocol: Hypersexual and hyposexual behavior among adults diagnosed with alcohol- and substance use disorders-Associations between traumatic experiences and problematic sexual behavior.

Background: Hypersexual and hyposexual behaviors are common concomitant of substance use disorders (SUD). On the one hand, the regular consumption of alcohol or illegal drugs can lead to hypersexual or hyposexual behavior due to its effects on the organism; on the other hand, the use of psychotropic substances is also used as a coping strategy concerning already existing sexual impairments. The aforementioned disorders show similarities in terms of their etiology, as traumatic experiences get special attention as potential risk factors for the development of addictions, hypersexual, and hyposexual behavior. Objectives: The study aims to explore the association between SUD characteristics and hypersexual/hyposexual behavior, and a potential moderating effect of early traumatic life events by answering the following research questions: (1) Do people with SUD differ from a sample of people with other psychiatric disorders regarding hypersexual and hyposexual behavior? (2) What are the associations between the presence of sexual problems and different characteristics of the SUD (e.g., mono vs. polysubstance use, type of addictive substance, intensity of the disorder)? (3) What influence do traumatic experiences in childhood and adolescence have on the existence of sexual disorders among adults with a diagnosed SUD? Method: The target group of this cross-sectional ex-post-facto study comprises adults diagnosed with an alcohol- and/or substance use disorder. Data will be collected with an online survey, which will be promoted via several support and networking services for people diagnosed with SUD. Two control groups will be surveyed, one consisting of people with other psychiatric disorders than SUD and traumatic experiences, and one healthy group. Relations between the dependent variables (hypersexual and hyposexual behavior) and independent variables (sociodemographic information, medical and psychiatric status, intensity of the prevalent SUD, traumatic experiences, and symptoms of posttraumatic stress disorder) will be initially calculated via correlations and linear regression. Risk factors will be identified via multivariate regression. Discussion: Gaining relevant knowledge promises new perspectives for prevention, diagnosis, case conception, and therapy of SUDs as well as problematic sexual behaviors. The results can provide more information about the importance of psychosexual impairments regarding the development and maintenance of SUDs.

[The role of health promoting schools for increasing health equity]. / Die Bedeutung schulischer Gesundheitsförderung für die Erhöhung gesundheitlicher Chancengleichheit.

Socioeconomic health inequalities are a major field of action in public health and tackling them is one of its main goals. However, there has been little success in reducing these health inequalities. This points to a large research deficit. Inequalities in health are already evident in childhood and adolescence, showing that those with a low socioeconomic background have more risk factors and at the same time fewer resources than their socially more privileged peers. Although health promotion aims at achieving equity in health, interventions rarely consider the socioeconomic status and can therefore provide only little evidence regarding socioeconomically differentiated intervention effects. How can we ensure that all children and young people have equal chances to grow up healthy?In order to come closer to answering this question, it is the aim of this article to give an overview of health inequalities in childhood and adolescence and to highlight the contribution of school and school-based health promotion interventions for tackling health inequalities and increasing equity in health. School is not only a place where adolescents can always be reached, regardless of their socioeconomic background, it has the potential to both exacerbate and reduce health inequalities.

Trends in material and non-material inequalities in adolescent health and health behaviours: A 12-year study in 23 European countries.

Information on trends in adolescent health inequalities is scarce but the available evidence suggests that inequalities are increasing. Prior studies describe associations between material resources of socioeconomic status (SES) and health, while information on non-material SES resources and inequalities in health behaviours is lacking. To improve current understandings of evolutions in adolescent health inequalities, we examined how material and non-material SES resources were associated with changes in selected health outcomes (life satisfaction, physical and psychological symptoms) and health behaviours (physical activity, screen time, breakfast, fruit, vegetables, sweets and soft drinks consumption and alcohol and tobacco use) over a 12-year period. Repeated cross-sectional data came from the 2002, 2006, 2010 and 2014 waves of the Health Behaviour in School-aged Children (HBSC) survey from 23 European countries (n = 480,386). Measures of family affluence and occupational social class were used as indicators of material and non-material SES resources respectively. Regression-based slope indices of inequality indicated that absolute material and non-material inequalities remained stable from 2002 to 2014 in all health outcomes, except for life satisfaction for which a decrease in material inequalities was found between the highest and lowest affluence group (0.81 to 0.68 difference; p < 0.001). In terms of health behaviours, material inequalities decreased in screen time between highest and lowest affluence groups (0.53 to 0.34 h/day difference; p < 0.001), fruit (odds ratio [OR] 1.89 to 1.72 lower odds; p = 0.0088) and soft drinks consumption (OR 1.36 to 1.13 lower odds; p < 0.001) and remained stable in all others. Non-material inequalities increased in all health behaviours (except for sweets consumption) between highest and lowest occupational social class groups: physical activity (0.16 to 0.24 h/day difference; p = 0.0071), screen time (-0.41 to -0.58 h/day difference; p < 0.001), breakfast (0.21 to 0.51 day/week difference; p < 0.001), fruit (OR 1.23 to 1.48 higher odds; p < 0.001), vegetables (OR 1.39 to 1.74 higher odds; p < 0.001) and soft drinks consumption (OR 0.59 to 0.43 lower odds; p < 0.001) and alcohol (OR 0.99 to 0.85 lower odds; p = 0.0420) and tobacco use (OR 0.71 to 0.59 lower odds; p = 0.0183). In summary, non-material inequalities in most health behaviours increased, whereas material inequalities in adolescent health and health behaviours remain stable or decreased. Policies and interventions may consider non-material SES components as these can help in reducing future health inequalities.

Role of contextual and compositional characteristics of schools for health inequalities in childhood and adolescence: a scoping review.

OBJECTIVES: To synthesise the evidence on the role of compositional or contextual characteristics of schools in the association between students' socioeconomic position and their health in primary and secondary education in developed economies. DESIGN: Scoping review. We included studies examining the role of at least one school or class characteristic on students' health inequalities and was published since 1 January 2000, in English or German. We searched PubMed/Medline, Web of Science and Education Resources Information Center. We provided a narrative synthesis and an overview of findings. School characteristics were grouped into five broad categories: school composition, school climate, school policies and organisation, food environment and facilities. RESULTS: Of 8520 records identified, 26 studies were included. Twelve studies found a moderating and 3 a mediating effect. The strongest evidence came from studies examining the moderating effect of school composition, that is, the negative impact of a low individual socioeconomic position on mental health and well-being was aggravated by a low average socioeconomic position of schools. Evidence concerning the role of school climate, school stratification (eg, performance base tracking) and sponsorship, food environment and sport facilities and equipment was generally weak or very weak and mostly based on singular findings. Overall, favourable meso-level characteristics mitigated the negative impact of low individual socioeconomic position on health outcomes. CONCLUSIONS: School characteristics affect health inequalities in children and adolescents to some degree, but future research is necessary to strengthen the existing evidence and address under-represented aspects in school characteristics and health outcomes.

Health Inequalities in Children and Adolescents: A Scoping Review of the Mediating and Moderating Effects of Family Characteristics.

This scoping review systematically mapped evidence of the mediating and moderating effects of family characteristics on health inequalities in school-aged children and adolescents (6-18 years) in countries with developed economies in Europe and North America. We conducted a systematic scoping review following the PRISMA extension for Scoping Reviews recommendations. We searched the PubMed, PsycINFO and Scopus databases. Two reviewers independently screened titles, abstracts and full texts. Evidence was synthesized narratively. Of the 12,403 records initially identified, 50 articles were included in the synthesis. The included studies were conducted in the United States (n = 27), Europe (n = 18), Canada (n = 3), or in multiple countries combined (n = 2). We found that mental health was the most frequently assessed health outcome. The included studies reported that different family characteristics mediated or moderated health inequalities. Parental mental health, parenting practices, and parent-child-relationships were most frequently examined, and were found to be important mediating or moderating factors. In addition, family conflict and distress were relevant family characteristics. Future research should integrate additional health outcomes besides mental health, and attempt to integrate the complexity of families. The family characteristics identified in this review represent potential starting points for reducing health inequalities in childhood and adolescence.

Correlation of mesolevel characteristics of the healthcare system and socioeconomic inequality in healthcare use: a scoping review protocol.

INTRODUCTION: Although the impact of macrolevel characteristics of health systems on socioeconomic inequity in health has been studied extensively, the impact of access characteristics on a smaller scale of health systems has received less attention. These mesolevel characteristics can influence access to healthcare and might have the potential to moderate or aggravate socioeconomic inequity in healthcare use. This scoping review aims to map the existing evidence of the association of socioeconomic inequity in healthcare use and mesolevel access characteristics of the health system. METHODS AND ANALYSIS: In conducting the scoping review, we follow the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols Extension for Scoping Reviews. The search will be carried out in four scientific databases: MEDLINE (via PubMed), Web of Science, Scopus and PsycINFO. Main eligibility criteria are inclusion in the analysis of a measure of socioeconomic position, a measure of individual healthcare use and a mesolevel determinant of access to healthcare services. The selection process consists of two consecutive screening stages (first: title/abstract; second: full text). At both stages, two reviewers independently assess the eligibility of studies. In case of disagreement, a third reviewer will be involved. Cohen's kappa will be calculated to report inter-rater agreement between reviewers. Results are synthesised narratively, as a high heterogeneity of studies is expected. ETHICS AND DISSEMINATION: No primary data are collected for the presented scoping review. Therefore, ethical approval is not necessary. The scoping review will be published in an international peer-reviewed journal, and findings will be presented on national and international conferences.

[The Good, the Bad and the Ugly: The Relationship between social Media Use, Subjective Health and Risk Behavior Among Children and Adolescents]. / The Good, the Bad and the Ugly: Die Beziehung zwischen sozialer Mediennutzung, subjektiver Gesundheit und Risikoverhalten im Kindes- und Jugendalter.

BACKGROUND: The current generation of young people spends more time using social media than any other age group. So far, not much is known about the consequences of social media use in terms of health and well-being among teenagers in Germany. The aim of the study was to investigate the association between social media use, health and risk behavior using data from a large representative sample for Germany. METHODS: Data were obtained from the German part of the WHO collaborative study "Health Behavior in School-aged Children (HBSC)" conducted in 2013/14. The analysis is based on 5.094 students aged 11, 13 and 15 years. Social media use was measured with an index based on 5 items. Outcomes were different measures of health and well-being as well as risk behavior. Analyses were conducted using cross tabulations and log-binomial regression models, separately for girls and boys. RESULTS: The results show that a frequent use of social media among girls was linked with poorer self-rated health (OR=1.58, 95%-CI=1.17-2.15) as well as repeated multiple psychosomatic complaints (OR=1.56, 95%-CI=1.22-1.98). For boys, multiple psychosomatic complaints (OR=1.36, 95%-CI=1.03-1.80) and low school satisfaction (OR=1.39, 95%-CI=1.06-1.83) were associated with high social media use. In terms of risk behavior, there was a clear and consistent link between frequent social media use and regular tobacco and alcohol consumption, drunkenness and bullying of classmates, irrespective of gender. The results remained stable after adjusting for age, school type and migration background. CONCLUSIONS: A clear association between social media use and various indicators of health and risk-behavior in childhood and adolescence in Germany could be identified. The results provide first indications of possible health-damaging effects of heavy social media use; these need to be confirmed using longitudinal data.

[The association between school tobacco policies and the perceived smoking prevalence of adolescents]. / Der Zusammenhang zwischen schulischer Tabakkontrolle und der wahrgenommenen Raucherprävalenz Jugendlicher.

BACKGROUND: In the German context, there is hardly any quantitative data about the implementation of school tobacco polices that include the perspective of both teachers and students. The aim of the study is to investigate the associations between implemented school tobacco policies and the perceived prevalence of smoking at the level of school staff and adolescents. METHODS: The repeated cross-sectional study (2013 and 2017) is based on pooled responses of 13- to 17-year-old adolescents (N = 2393) and school staff (N = 85) from 25 schools located in the West German metropolitan region of Hanover. In linear regression models, average marginal effects (AMEs) with 95% confidence intervals (CI95%) and robust standard errors for perceived tobacco prevalence are reported separately for school tobacco policies assessed by teachers and students (scale 0-6). All models were controlled for sociodemographic, school-, and smoking-specific covariates. RESULTS: On average, adolescents perceive a smoking prevalence of 30% ([Formula: see text]; s: 24.0) for their school. A comprehensive school tobacco policy is consistently associated with lower school smoking prevalence both from the point of view of teachers (AME: -3.54 CI95% -6.49 to -0.58) and students (AME: -1.69 CI95% -2.52 to -0.86). The number of smoking friends (e.g., "most of them are smokers" +14%: AME: 14.13 CI95% 10.46 to 17.80) and the type of school are the most relevant determinants of a high school smoking prevalence. School types with a nonacademic track report a 15% (AME: 15.03 CI95% 10.13 to 19.93) higher prevalence compared to grammar schools. DISCUSSION: Progressive school tobacco control policies should focus more on school types with nonacademic tracks, certain groups at risk, and those schools that do not strictly enforce school tobacco policies.

Role of contextual and compositional characteristics of schools for health inequalities in childhood and adolescence: protocol for a scoping review.

INTRODUCTION: Childhood and adolescence are crucial life stages for health trajectories and the development of health inequalities in later life. The relevance of schools for health and well-being of children and adolescents has long been recognised, and there is some research regarding the association of contextual and compositional characteristics of schools and classes with health, health behaviour and well-being in this population. Little is known about the role of meso-level characteristics in relation to health inequalities. The aim of this scoping review is to retrieve and synthesise evidence about the mediating or moderating role of compositional or contextual characteristics of schools for the association between students' socioeconomic position and health in primary and secondary education. METHODS AND ANALYSIS: We will conduct a systematic search of electronic databases in PubMed/Medline, Web of Science and Education Resources Information Center. Studies must meet the following inclusion criteria: (1) The population must be students attending primary or secondary schools in developed economies. (2) The outcomes must include at least one indicator for individual health, health behaviour or well-being. (3) The study must include at least one contextual or compositional characteristic of the school context and one individual determinant of socioeconomic position. (4) The study must also examine the mediating or moderating role of the contextual or compositional characteristic of the school context for the associations between socioeconomic position and health, health behaviour or well-being. (5) The study must be published since 1 January 2000 in English or German language. We will provide a narrative synthesis of findings. ETHICS AND DISSEMINATION: We will not collect primary data and only include secondary data derived from previously published studies. Therefore, ethical approval is not required. We intend to publish our findings in an international peer-reviewed journal and to present them at national and international conferences.