OBJECTIVES: To describe age and gender specific time trends in adolescent violence across 19 countries over 28 years. METHODS: The paper presents analysis of eight cycles of the Health Behaviour in School-aged Children (HBSC) Study from 1994-2022, involving 789,531 children aged 11, 13, and 15. Indicators of violence included physical fighting, school bullying and cyberbullying (from 2018). Log-binomial regression models were used to test for linear temporal trends, with Generalized Estimating Equations used to account for clustering by country. RESULTS: School bullying perpetration and victimization declined over time in each age/gender group in most countries. Similar declines were reported for frequent physical fighting among boys (all ages) and girls (age 15 only). The prevalence of violent behaviour was almost universally higher in boys in the early cycles than in girls, but this gender difference attenuated over time. For cyberbullying, significant increases were observed since 2018 in all groups except age 15 girls in most countries. CONCLUSION: This analysis of a large cross-national dataset suggests a decline in traditional forms of adolescent violence. However, the increases in cyberbullying warrant further monitoring.

• Klíčová slova
• adolescent health, bullying, cyberbullying, fighting, violence,
• MeSH
• chování mladistvých * MeSH
• dítě MeSH
• kyberšikana statistika a číselné údaje   MeSH
• lidé MeSH
• mladiství MeSH
• násilí * trendy   statistika a číselné údaje   MeSH
• oběti zločinu statistika a číselné údaje   MeSH
• prevalence MeSH
• sexuální faktory MeSH
• šikana * statistika a číselné údaje   MeSH
• školy MeSH
• Check Tag
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Evropa epidemiologie   MeSH
• Severní Amerika epidemiologie   MeSH

BACKGROUND: For an efficient planning of public health policy, the regular monitoring over health-related behaviors among vulnerable population groups is necessary. The aim of this study is to examine the temporal trends in alcohol use among the Czech adolescent population. DESIGN AND METHODS: Data from the Health Behaviour in Schoolaged Children (HBSC) project conducted in Czechia from 1994 to 2014 were used. Adolescent alcohol use was assessed via two indicators: i) weekly alcohol use (beer, wine, and/or spirit), ii) repeated lifetime drunkenness (having been drunk on two or more occasions in life). Trends in alcohol use were modelled separately for boys and girls. Binary logistic regression was conducted with survey period as an independent predictor of the alcohol indicator. RESULTS: There were significant changes in adolescent alcohol use since 1994. Between 1994 and 2010, there was a gradual upward in the prevalence. However, in the recent period of 2014, an unprecedented drop in alcohol use was recorded. CONCLUSIONS: Despite the significant drop in the prevalence of alcohol use among the Czech youth in recent years, alcohol drinking in adolescence remains an important challenge for the national health policy. Further research will show whether these changes in adolescent health-related behavior are of a temporary or a permanent nature.

• Klíčová slova
• adolescence, alcohol use, gender inequalities, prevalence, trends,
• Publikační typ
• časopisecké články MeSH