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J Clin Sleep Med. 2008 Dec 15;4(6):533-5.

Adolescent sleep, school start times, and teen motor vehicle crashes.

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1
Department of Educational and Counseling Psychology, Critical Care and Sleep Medicine, University of Kentucky, Lexington, KY 40536-0298, USA.

Abstract

STUDY OBJECTIVES:

To assess the effects of delayed high-school start times on sleep and motor vehicle crashes.

METHODS:

The sleep habits and motor vehicle crash rates of adolescents from a single, large, county-wide, school district were assessed by questionnaire before and after a 1-hour delay in school start times.

RESULTS:

Average hours of nightly sleep increased and catch-up sleep on weekends decreased. Average crash rates for teen drivers in the study county in the 2 years after the change in school start time dropped 16.5%, compared with the 2 years prior to the change, whereas teen crash rates for the rest of the state increased 7.8% over the same time period.

CONCLUSIONS:

Later school start times may both increase the sleep of adolescents and decrease their risk of motor vehicle crashes.

Comment in

PMID:
19110880
PMCID:
PMC2603528
[Indexed for MEDLINE]
Free PMC Article
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