# Effects of Delayed School Start Times on Sleep, Mental Health, and Academic Performance Among Norwegian Adolescents

> **NCT06657482** · NA · COMPLETED · sponsor: **University of Bergen** · enrollment: 583 (actual)

## Conditions studied

- Sleep
- Sleep Disorders, Circadian Rhythm
- Psychiatric Disorder
- Sleepiness, Daytime

## Interventions

- **BEHAVIORAL:** Delayed school start time

## Key facts

- **NCT ID:** NCT06657482
- **Lead sponsor:** University of Bergen
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2023-08-15
- **Primary completion:** 2025-06-30
- **Final completion:** 2025-06-30
- **Target enrollment:** 583 (ACTUAL)
- **Last updated:** 2026-05-01

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06657482

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06657482, "Effects of Delayed School Start Times on Sleep, Mental Health, and Academic Performance Among Norwegian Adolescents". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT06657482. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*