Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2026
Delayed school start times to improve sleep duration and mitigate depression in adolescents: a systematic review and meta-analysis.
СтатьяСистематический обзорМетаанализНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Wang Richard C, Lee Maximilian I, Aroul Guru S, Silcox Tinsley E, Lipin Daniel I
Аннотация
BACKGROUND AND OBJECTIVES: Delayed school start time (DSST) has been associated with prolonged sleep duration and reduced depressive symptoms. However, the overall magnitude of these effects remains unclear. We therefore conducted a systematic review and meta-analysis to assess the impact of DSST on sleep duration and depressive symptoms among middle and high school students.
METHODS: We systematically searched Medline, Google Scholar, and Science Direct for studies examining the relationship between DSST and both sleep duration and depression. Four independent reviewers conducted risk-of-bias and quality assessments for each study. For quantitative synthesis, we calculated the standardized mean difference (SMD) using Hedges's g to evaluate changes in sleep duration and depression.
RESULTS: A total of six studies were included in the final meta-analysis. The pooled analysis indicated that DSST was associated with an average increase in sleep duration of 69 min, with an SMD of 0.63, suggesting a moderate effect size. In contrast, analysis of depressive symptoms, based on five studies, produced a pooled SMD of - 0.20, indicating a smaller effect. Both analyses demonstrated high inter-study heterogeneity.
CONCLUSIONS: Our findings suggest that DSST is associated with a moderate improvement in sleep duration among middle and high school students, with minimal evidence of publication bias and small-studies effect, while depressive symptoms showed a small reduction. Further research with larger sample sizes and standardized outcome measures is warranted to clarify these associations.
METHODS: We systematically searched Medline, Google Scholar, and Science Direct for studies examining the relationship between DSST and both sleep duration and depression. Four independent reviewers conducted risk-of-bias and quality assessments for each study. For quantitative synthesis, we calculated the standardized mean difference (SMD) using Hedges's g to evaluate changes in sleep duration and depression.
RESULTS: A total of six studies were included in the final meta-analysis. The pooled analysis indicated that DSST was associated with an average increase in sleep duration of 69 min, with an SMD of 0.63, suggesting a moderate effect size. In contrast, analysis of depressive symptoms, based on five studies, produced a pooled SMD of - 0.20, indicating a smaller effect. Both analyses demonstrated high inter-study heterogeneity.
CONCLUSIONS: Our findings suggest that DSST is associated with a moderate improvement in sleep duration among middle and high school students, with minimal evidence of publication bias and small-studies effect, while depressive symptoms showed a small reduction. Further research with larger sample sizes and standardized outcome measures is warranted to clarify these associations.