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Updated: Jun 8, 2026
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Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
Sleep quality, the neglected outcome variable in clinical studies focusing on locomotor system; a construct
Emin Aghayev1, Haiko Sprott, Dieter Bohler
1Institute for Evaluative Research in Medicine, University of Bern, Switzerland. emin.aghayev@memcenter.unibe.ch
BMC Musculoskeletal Disorders
|October 6, 2010
Summary
A new four-item Sleep Standard Evaluation Questionnaire (SEQ-Sleep) effectively assesses sleep quality. This reliable tool shows good correlation with health and pain perception, making it suitable for general population studies.
Area of Science:
- Sleep science
- Psychometrics
- Public health
Background:
- Sleep is crucial for well-being and recovery but often overlooked in health outcome studies.
- Altered sleep impacts mental and physical health, particularly during illness.
- Existing sleep assessment tools are often too lengthy or specific for broad application.
Purpose of the Study:
- To develop and validate a concise sleep assessment tool for population-based studies.
- To address the need for a short, reliable sleep questionnaire suitable for general use.
Main Methods:
- A four-item questionnaire was designed based on literature review and patient input.
- Construct validation was performed on a random sample of the German-speaking Swiss population.
- Reliability, internal consistency, and validity were analyzed.
Main Results:
- The study included 16,634 participants.
- The Sleep Standard Evaluation Questionnaire (SEQ-Sleep) demonstrated good test-retest reliability (0.72-0.87) and internal consistency (Cronbach's alpha = 0.83).
- Sleep disturbances correlated moderately to strongly with health perception and overall pain.
Conclusions:
- The SEQ-Sleep is a reliable, valid, and brief instrument for sleep assessment in population studies.
- Its ease of administration makes it suitable for postal surveys.
- Further research is needed to determine its criterion validity.
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