deltatrials
Completed INTERVENTIONAL NCT05633498

Self-help Book for Shift Work Related Problems

The Effect of a Self-help Book for Shift Work Related Problems - a Randomized Controlled Trial

Sponsor: University of Bergen

Updated 6 times since 2022 Last updated: Apr 30, 2026 Started: Nov 18, 2022 Primary completion: Jan 1, 2025 Completion: Jan 1, 2025
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT05633498, this observational or N/A phase trial focuses on Shift-work Disorder and remains completed. Sponsored by University of Bergen, it has been updated 6 times since 2022, reflecting limited change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.

Study Description(click to expand)

This study is a randomized controlled trial evaluating the effect of a self-help book for shift work related problems compared to the effect of sleep hygiene advice in participants with shift work disorder. 300 participants will be randomized to receive either the book or the sleep hygiene advice. Participants complete questionnaires about sleep, sleepiness and health at baseline and after 6 months after receiving the written material. The main aims are to assess whether the book is more effective to reduce sleep and sleepiness problems in relation to shift work, and to reduce the prevalence of shift work disorder, to increase knowledge about sleep and circadian rhythms, improve health, and reduce turnover intention.

This study is a randomized controlled trial evaluating the effect of a self-help book for shift work related problems compared to the effect of sleep hygiene advice in participants with shift work disorder. 300 participants will be randomized to receive either the book or the sleep hygiene advice. Participants complete questionnaires about sleep, sleepiness and health at baseline and after 6 months after receiving the written material. The main aims are to assess whether the book is more effective to reduce sleep and sleepiness problems in relation to shift work, and to reduce the prevalence of shift work disorder, to increase knowledge about sleep and circadian rhythms, improve health, and reduce turnover intention.

Status Flow

~Dec 2022 – ~Jan 2023 · 31 days · monthly snapshotRecruiting~Jan 2023 – ~Jun 2024 · 17 months · monthly snapshotRecruiting~Jun 2024 – ~Jul 2024 · 30 days · monthly snapshotRecruiting~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshotRecruiting~Sep 2024 – ~May 2026 · 20 months · monthly snapshotRecruitingMay 4, 2026 – present · 2 months · daily APICompleted

Change History

6 versions recorded
  1. May 4, 2026 — Present [daily]

    Completed

    Status: RecruitingCompleted · Phase: NANone

  2. Sep 2024 — May 2026 [monthly]

    Recruiting NA

  3. Jul 2024 — Sep 2024 [monthly]

    Recruiting NA

  4. Jun 2024 — Jul 2024 [monthly]

    Recruiting NA

  5. Jan 2023 — Jun 2024 [monthly]

    Recruiting NA

Show 1 earlier version
  1. Dec 2022 — Jan 2023 [monthly]

    Recruiting NA

    First recorded

Nov 2022

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

The aim is to assess whether a self-help book for coping with shift work will reduce complaints in relation to shift work.

Contact Information

Sponsor contact:
  • University of Bergen
Data source: ClinicalTrials.gov

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations