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Completed

NCT Number: NCT05633498

Self-help Book for Shift Work Related Problems

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

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Key information

Conditions

Shift-work Disorder

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Bergen

Bergen, Hordaland, 5018, Norway

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Symptoms suggesting shift work disorder
  • Health care worker

Exclusion criteria

  • Below 18 years

Treatment and study plan

Book

Other

Self-help book describing advice to cope with shift work

Sleep hygiene

Other

Basic sleep hygiene advice on a piece of paper

Primary outcomes

  1. Sleep problems

    Time frame: 6 months

    Self-reported sleep problems in relation to shift work on a validated scale - Bergen Shift Work Sleep Questionnaire (BSWSQ). Questions range from 0 to 4 with higher values indicating more sleep problems.

  2. Sleepiness problems

    Time frame: 6 months

    Self-reported sleepiness in relation to shift work on a validated scale - Bergen Shift Work Sleep Questionnaire (BSWSQ). Questions range from 0 to 4 with higher values indicating more sleepiness.

Secondary outcomes

  1. Shift work disorder

    Time frame: 6 months

    Prevalence of shift work disorder based on international criteria

  2. Knowledge about shift work and health

    Time frame: 6 months

    Questions about sleep, circadian rhythms and shift work

  3. Sick leave

    Time frame: 6 months

    Self-reported sickness absence

  4. Turnover intention

    Time frame: 6 months

    Self-reported turnover intention on a validated scale (TI) with scores ranging from 0 to 4 with higher values indicating more turnover intention.

Sponsors and collaborators

Lead sponsor

University of Bergen

Other

Registry information

Official study title

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

Important dates

Study start
2022
Primary completion
2025
Study completion
2025
First posted
Dec 1, 2022
Registry last updated
May 1, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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