An observational study in Sleep, sponsored by National Jewish Health. Completed at 1 site in United States. Open to participants aged 8 Years and older. Per ClinicalTrials.gov, last updated 2022-09-29.
Sponsored by National Jewish Health · Observational
Sleep is not an optional luxury, but a fundamental biological need, essential for health and well-being. Insufficient sleep is a significant public health issue, with 69% of adolescents in America obtaining less than the minimum requirement of 8 hours of sleep per night. Early school start times has been identified as the most significant and modifiable factor that restricts sleep duration in adolescents. The American Academy of Pediatrics recommended in 2014 that all middle and high schools start no earlier than 8:30 a.m., yet few school districts have implemented this change. In fall 2017, the Cherry Creek School District, a diverse district of almost 55,000 students outside Denver, changed school start times. Although previous studies have shown increased sleep duration, decreased daytime sleepiness, and improved academics following start time changes for secondary students, there remains an urgent need to understand how this policy impacts health and well-being for all students, including youth in elementary school. Recognizing that students are part of a complex system that includes parents, school staff, and the community, this observational study will be a multi-year, broad-based evaluation that includes key stakeholders, multiple sources of quantitative data (i.e., surveys, academic records, district nursing electronic health records), contextual qualitative data (i.e., open-ended surveys and focus groups), and community-based outcomes (i.e., data on vehicle crashes and juvenile crimes). The primary hypothesis is that later school start times will have a positive impact on middle and high school students sleep and health outcomes, while earlier school start times will have a neutral impact on elementary school students sleep and health outcomes.
National Jewish Health is the lead sponsor of 108 studies on the registry; 14 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Participants were drawn from the Cherry Creek School District outside of Denver, Colorado
Exclusion Criteria:
Other: Change in school start times
Other: Change in school start times
Other: Change in school start times
Elementary start times changed from 9:00 a.m. to 8:00 a.m.; middle school start times changed from 8:00 a.m. to 8:50 a.m.; high school start times changed from 7:10 a.m. to 8:20 a.m.
Change in sleep duration from before start time change to 1 and 2 years after start time change
Reported sleep from bedtime to wake time
Time frame: Typical bedtime and wake time, assessed prior to start time change, and 1 and 2 years after start time change
Plan to share: Undecided
This study is completed, as verified in Sep 2022. You cannot join it, but the record below documents what was studied.
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National Jewish Health