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KMID : 1039220200300030321
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Journal of Korean Society of Occupational and Environmental Hygiene
2020 Volume.30 No. 3 p.321 ~ p.330
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Shift Work and Anxiety Symptoms at an Electronic Manufacture Company: The mediating effect of vitamin D and sleep quality
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Chae Chang-Ho
Park Young-Sook
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Abstract
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Objectives: The purpose of this study was to compare vitamin D levels, sleep quality, and anxiety symptoms between shift workers and daytime workers and analyze the mediating effect of vitamin D and sleep quality between shift work and anxiety symptoms.
Methods: The subjects of the study were 6744 people who received a medical examination while working for an electronics manufacturing company in 2016. We evaluated their shift work, vitamin D levels, sleep quality, and anxiety symptoms with blood samples and questionnaires. Chi-square test, t-test and path statistical analysis were performed.
Results: The shift workers had significantly higher symptoms of anxiety than the day workers, significantly lower levels of vitamin D in the blood, and significantly poorer quality of sleep. The results of the pathway analysis confirmed that blood vitamin D and sleep quality had a mediating effect between shift work and anxiety symptoms.
Conclusions: Shift workers should be constantly paying attention to mental health effects such as anxiety symptoms. Shift workers should also be alerted of the risk of vitamin D deficiency, encouraged about sun exposure and vitamin D intake, and required to undergo training and counseling on sleep hygiene.
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KEYWORD
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Anxiety symptoms, shift work, sleep quality, vitamin D
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