Effects of Delayed School Start Times on Sleep, Mental Health, and Academic Performance Among Norwegian Adolescents
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 583
- 试验地点
- 1
- 主要终点
- Average sleep duration on school days
研究概览
简要总结
The aim is to investigate whether later school start times have positive effects on high school students' sleep patterns, mental health and daytime functioning.
详细描述
The current study is a randomized controlled study investigating whether later school start times on Mondays and Tuesdays have positive impact on high school students' sleep patterns, mental health, and daytime functioning. 1st year high school students are randomly assigned to classes starting either two hours later on Mondays and one hour later on Tuesday and ordinary school start times (8:15 ± 15 min) for the rest of the week, or to classes starting at regularly school start times (8:15 ± 15 min.) all weekdays. The students will be invited to respond to a web-based survey assessing sleep, mental health, and daytime functioning by the beginning and end of the school year. Official school grades and school absence data will be collected through the county administration for consenting students. Cognitive tests and objective sleep record through Somnofy are planned for a subgroup by the end of the 2024-25 school year. The study will last for two school years and involve two different cohorts of 1st year high school students.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •1st year high school students at study preparatory program of participating schools
排除标准
- •Parent consent not obtained/documented for participants under 16 years
研究组 & 干预措施
Delayed school start times on Mondays and Tuesdays (intervention condition)
Two hour delay in school start time on Mondays and one hour delay on Tuesdays. Ordinary school start time (8:15 ± 15 min) for the rest of the week.
干预措施: Delayed school start time (Behavioral)
Ordinary school start time all weekdays (control condition)
Ordinary school start time (8:15 ± 15 min) all school days
结局指标
主要结局
Average sleep duration on school days
时间窗: Baseline and at the end of the school year (at about 8 months follow-up)
Average sleep duration across the arms will be calculated using the Munich ChronoType Questionnaire (MCTQ), adjusted for nocturnal awakenings
Preferred school start time (late vs. early Mondays and Tuesdays)
时间窗: At the end of the school year (at about 8 months follow-up)
A conditioned item asking how satisfied the students are starting early or later on Mondays and Tuesdays, or ranging from "Very satisfied" to "very dissatisfied", will be included.
Daytime sleepiness on school days
时间窗: CADSS: Baseline and at the end of the school year (at about 8 months follow-up). KSS: At the end of the school year (at about 8 months follow-up)-up
Daytime sleepiness will be assessed based on the Karolinska Sleepiness Scale (KSS; adjusted to target sleepiness on each weekday) and The Chinese adolescent daytime sleepiness scale (CADSS).
次要结局
- School absence and academic performance (self-reported and objective)(Self-reported data: Baseline and end of school year. Objective data: At the end of the school year (at about 8 months follow-up)-up)
- Mental health(Baseline and at the end of the school year (at about 8 months follow-up))
- Social jetlag(Baseline and at the end of the school year (at about 8 months follow-up))
- Sleep duration, school days with early vs. late start(At the end of the school year (at about 8 months follow-up))