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KMID : 1034320170080010039
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Sleep Medicine Research
2017 Volume.8 No. 1 p.39 ~ p.43
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The Effect of Morningness-Eveningness on Shift Work Nurses: Sleep Quality, Depressive Symptoms and Occupational Stress
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Yoo Gil-Sang
Kim Tae-Won
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Abstract
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Background and Objective : The purpose of this study was to investigate the effect of morningness-eveningness type on nurses relative to sleep quality, depressive symptoms and occupational stress.
Methods: Data was collected using self-administering questionnaires by 257 three eight-hour randomly rotating shift system nurses at St. Vincent’s Hospital. Questionnaires were composed of baseline demographic data, Korean version of Morningness-Eveningness Questionnaire, Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), Beck Depression Inventory and Korean Occupational Stress Scale. Kruskal-Wallis H test and analysis of covariance were used to identify significant differences in sleep parameters, depressive symptoms and occupational stress according to morningness-eveningness type.
Results: There was significant difference in Subjective Sleep Quality score (p = 0.018). Post hoc analysis revealed differences between eveningness vs. morningness (p = 0.001) in Subjective Sleep Quality score. There were tendencies in sleep efficiency, PSQI total score and ESS between morningness-eveningness type. However, there were no significant differences in total sleep time, depressive symptoms and occupational stress including eight sub-categories according to morningness-eveningness type.
Conclusions: Eveningness type nurses revealed lower Subjective Sleep Quality and tendency for poor sleep efficiency, poor overall sleep efficiency and more severe daytime sleepiness than other type. However, morningness-eveningness were not decisive factors for total sleep time, depressive symptoms and occupational stress. Short-term medication, workers’ chronotypes consideration and naps before night shifts may be helpful in improving mental health and quality of life for shift nurses, especially for evening shifts.
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KEYWORD
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Morningness-eveningness, Shift work, Sleep quality, Depression, Occupational stress
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