A quasi-experimental study of the impact of school start time changes on adolescents' mood, self-regulation, safety, and health

Robert C. Whitaker, Tracy Dearth-Wesley, Allison N. Herman, Michael Oakes, Judith A. Owens

Research output: Contribution to journalArticle

Abstract

Objective: To determine whether school start time changes impact adolescents' mood, self-regulation, safety, and health. Methods: In September 2015, two school start time changes were implemented in Fairfax County (VA) Public Schools: a 50-minute delay (to 8:10 AM) for high schools and secondary schools and a 30-minute advance (to 7:30 AM) for middle schools. We conducted cross-sectional surveys of students' sleep, mood, self-regulation, health, and safety before (2017 students) and after (1180 students) these changes. Results: Adjusted for confounders, a 50-minute delay was associated with a decreased prevalence of low mood (−4.7%; 95% confidence interval [CI]: −8.2%, −1.2%), drowsy driving, (−8.4%; 95% CI: −15.9%, −0.9%), and skipping breakfast (−4.2%; 95% CI: −8.1%, −0.2%) but no other significant changes. There were no significant changes associated with a 30-minute advance. Conclusions: A 50-minute delay in school start time in high schools and secondary schools was associated with a decreased prevalence of low mood, drowsy driving, and skipping breakfast. A 30-minute advance in start time in middle schools was not associated with any appreciable changes.

Original languageEnglish (US)
JournalSleep Health
DOIs
StatePublished - Jan 1 2019

Fingerprint

Safety
Health
Breakfast
Confidence Intervals
Students
Non-Randomized Controlled Trials
Self-Control
Sleep
Cross-Sectional Studies

Keywords

  • Adolescent
  • Breakfast
  • Driving
  • Mood
  • Policy
  • Schools
  • Self-regulation

PubMed: MeSH publication types

  • Journal Article

Cite this

A quasi-experimental study of the impact of school start time changes on adolescents' mood, self-regulation, safety, and health. / Whitaker, Robert C.; Dearth-Wesley, Tracy; Herman, Allison N.; Oakes, Michael; Owens, Judith A.

In: Sleep Health, 01.01.2019.

Research output: Contribution to journalArticle

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abstract = "Objective: To determine whether school start time changes impact adolescents' mood, self-regulation, safety, and health. Methods: In September 2015, two school start time changes were implemented in Fairfax County (VA) Public Schools: a 50-minute delay (to 8:10 AM) for high schools and secondary schools and a 30-minute advance (to 7:30 AM) for middle schools. We conducted cross-sectional surveys of students' sleep, mood, self-regulation, health, and safety before (2017 students) and after (1180 students) these changes. Results: Adjusted for confounders, a 50-minute delay was associated with a decreased prevalence of low mood (−4.7{\%}; 95{\%} confidence interval [CI]: −8.2{\%}, −1.2{\%}), drowsy driving, (−8.4{\%}; 95{\%} CI: −15.9{\%}, −0.9{\%}), and skipping breakfast (−4.2{\%}; 95{\%} CI: −8.1{\%}, −0.2{\%}) but no other significant changes. There were no significant changes associated with a 30-minute advance. Conclusions: A 50-minute delay in school start time in high schools and secondary schools was associated with a decreased prevalence of low mood, drowsy driving, and skipping breakfast. A 30-minute advance in start time in middle schools was not associated with any appreciable changes.",
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AU - Owens, Judith A.

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