Trends in self-reported sleep problems, tiredness and related school performance among Finnish adolescents from 1984 to 2011.

The aim of this study was to investigate long-term trends in insomnia symptoms, tiredness and school performance among Finnish adolescents. A time-series from 1984 to 2011 was analysed from two large-scale survey studies, the Finnish School Health Promotion Study and the Health Behavior in School-Aged Children study. A total of 1,136,583 adolescents aged 11-18 years answered a standardized questionnaire assessing frequency of insomnia symptoms, tiredness and school performance.

Late bedtimes weaken school performance and predispose adolescents to health hazards.

Study Objectives: Our study explored if bedtimes influenced school performance and motivation, as well as the odds ratio (OR) for health-related concerns in adolescents.

Methods: The School Health Promotion Study was based on an anonymous self-report questionnaire conducted in 90% of the municipalities in Finland. The study was conducted during 2008 and 2010 in Southern Finland, Eastern Finland, and Lapland, and during 2009 and 2011 in Western Finland, Northern Finland, and Åland.

School environment as predictor of teacher sick leave: data-linked prospective cohort study.

Background: Poor indoor air quality (IAQ) and psychosocial problems are common in schools worldwide, yet longitudinal research on the issue is scarce. We examined whether the level of or a change in pupil-reported school environment (IAQ, school satisfaction, and bullying) predicts recorded sick leaves among teachers.

Methods: Changes in the school environment were assessed using pupil surveys at two time points (2001/02 and 2004/05) in 92 secondary schools in Finland.

Association of pupil vandalism, bullying and truancy with teachers' absence due to illness: a multilevel analysis.

The aim of this study was to examine whether vandalism, bullying, and truancy among pupils at school are associated with absence due to illness among teachers. Data on such problem behaviour of 17,033 pupils in 90 schools were linked to absence records of 2364 teachers. Pupil reported vandalism and bullying at the school-level were associated with teachers' short-term (1- to 3-day) absences.

Students' school satisfaction as predictor of teachers' sickness absence: a prospective cohort study.

Background: Although health is an important determinant of sickness absence, social relationships at the workplace may also affect levels of sick leaves. This study examined whether students' self-assessed satisfaction with school predicted sickness absence among teachers in Finnish secondary schools.

Methods: We measured school satisfaction of 17 033 students aged 14-16 years from 90 schools by a survey (the School Health Promotion Study) and aggregated school-specific scores of students' school satisfaction.