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Updated: Sep 9, 2025
08:36
Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
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Developing a Sleepiness Scale for Nurses and Physicians: A Methodological Study.
Ali Kaplan1, Özlem Kaplan2, Cevriye Özdemir1
1Department of Medical Services and Techniques, İncesu Ayşe and Saffet Arslan Health Services Vocational School, University of Kayseri, Kayseri, Türkiye.
Nursing Open
|September 4, 2025
Summary
A new 19-item scale effectively measures sleepiness in nurses and physicians working night shifts. This valid and reliable tool assesses cognitive effects, difficulty staying awake, and coping strategies, enhancing healthcare safety.
Area of Science:
- Healthcare worker well-being
- Nursing and medical research
- Sleep science and occupational health
Background:
- Healthcare worker sleepiness poses risks to patient and staff safety.
- Objective assessment of sleepiness in night-shift nurses and physicians is crucial.
Purpose of the Study:
- To develop and validate a reliable scale for measuring sleepiness in nurses and physicians working night shifts.
Main Methods:
- Methodological study design utilizing literature review and qualitative data analysis.
- Content validity assessed by 21 experts; scale administered to 255 nurses and 230 physicians.
- Statistical analyses included KMO, Bartlett's test, EFA, PCA, Varimax rotation, CFA, Cronbach's alpha, Spearman, and Wilcoxon tests.
Main Results:
- A 19-item, three-factor scale was developed: 'cognitive and physical effects of sleepiness', 'difficulty keeping awake', and 'sleepiness coping strategies'.
- Exploratory factor analysis indicated sufficient data (KMO > 0.5), with three factors explaining 58.927% of variance.
- High internal consistency (Cronbach's alpha = 0.923 total) and satisfactory test-retest reliability (ICC = 0.958) were confirmed.
Conclusions:
- The developed Sleepiness Scale is a valid and reliable instrument.
- This scale can accurately assess the severity of sleepiness in night-shift nurses and physicians.
- Improved sleepiness assessment can contribute to enhanced healthcare safety.
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