# Changing School Start Times: Impact on Student, Family, Teacher, and Community Health

> **NCT03964181** · — · COMPLETED · sponsor: **National Jewish Health** · enrollment: 118000 (actual)

## Conditions studied

- Sleep

## Interventions

- **OTHER:** Change in school start times

## Key facts

- **NCT ID:** NCT03964181
- **Lead sponsor:** National Jewish Health
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2017-04-11
- **Primary completion:** 2019-05-31
- **Final completion:** 2021-07-31
- **Target enrollment:** 118000 (ACTUAL)
- **Last updated:** 2022-09-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03964181

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03964181, "Changing School Start Times: Impact on Student, Family, Teacher, and Community Health". Retrieved via AI Analytics 2026-06-26 from https://api.ai-analytics.org/clinical/NCT03964181. Licensed CC0.

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