Feeling Unsafe at School Among Adolescents in 13 Asian and European Countries: Occurrence and Associated Factors.

Background: Research on perceived school safety has been largely limited to studies conducted in Western countries and there has been a lack of large-scale cross-national studies on the topic.

Methods: The present study examined the occurrence of adolescents who felt unsafe at school and the associated factors of perceived school safety in 13 Asian and European countries. The data were based on 21,688 adolescents aged 13-15 (11,028 girls, 10,660 boys) who completed self-administered surveys between 2011 and 2017.

Bullying at 8 years and violent offenses by 31 years: the Finnish nationwide 1981 birth cohort study.

This study explored the associations between bullying perpetration and victimization at 8 years of age and violent offenses by the age of 31. Data were obtained for subjects enrolled in a population-based longitudinal birth cohort study. In 1989, 5813 8-year-old children (attrition 3.

Victimization by traditional bullying and cyberbullying and the combination of these among adolescents in 13 European and Asian countries.

There has been a lack of studies on bullying in non-western low-income and middle-income countries. This study reported the prevalence of traditional victimization, cybervictimization, and the combination of these, in 13 European and Asian countries, and explored how psychiatric symptoms were associated with victimization. The data for this cross-sectional, school-based study of 21,688 adolescents aged 13-15 were collected from 2011 to 2017.

Feeling Unsafe at School and Associated Mental Health Difficulties among Children and Adolescents: A Systematic Review.

This study systematically reviewed the literature on perceived school safety. We investigated the prevalence, factors and associated mental health difficulties, as well as cross-cultural findings. Five databases were searched up to 9 February 2021 for peer-reviewed papers published in English.

Relative age and specific learning disorder diagnoses: A Finnish population-based cohort study.

Background: Being among the youngest in class has previously been associated with attention-deficit/hyperactivity disorder (ADHD) and academic disadvantage, but the relative age effect on learning disorders is less well understood. This study examined whether relatively young children are more likely to be diagnosed with specific learning disorders than their older peers.

Methods: The setting included all 388,650 children born singleton in Finland from 1996 to 2002.

Relative age is associated with bullying victimisation and perpetration among children aged eight to nine.

Aim: To assess whether relative age was associated with bullying involvement and whether the associations were independent of child psychiatric symptoms.

Methods: Bullying was assessed among 8576 children in the second grade, aged 8 years, by using four cross-sectional population-based studies with identical methodology completed by children, parents and teachers in 1989 (response rate 97%), 1999 (93%), 2005 (90%) and 2013 (86%). The main outcomes were bullying victimisation and perpetration.

Did Bullying Victimization Decrease After Nationwide School-Based Antibullying Program? A Time-Trend Study.

Objective: We assessed changes in traditional and cyberbullying victimization, and their associations with mental health, before and after the introduction of a nationwide antibullying program in Finnish schools in 2009.

Method: This time-trend assessment comprised two methodologically identical cross-sectional survey studies, with 2,061 adolescents in 2008 (response rate 90.2%) and 1,936 in 2014 (91.

Time trends of Finnish adolescents' mental health and use of alcohol and cigarettes from 1998 to 2014.

This study reports time-trend changes in self-reported mental health problems, smoking, and alcohol habits among Finnish adolescents over a 16-year period using three cross-sectional studies with similar designs, methodologies, and geographical recruitment areas. There were 4508 participants with a mean age of 14.4 years (range 13-18) in 1998 (n = 1449), 2008 (n = 1560), and 2014 (n = 1499).