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KMID : 1039620160060020063
Korean Journal of Family Practice
2016 Volume.6 No. 2 p.63 ~ p.69
The Relationship between Shift Work and Depressive Symptom
Park Ji-Woong

Sun Yo-Han
Noh Myoung-Sook
Abstract
Background: The number of shift workers has progressively increased with increasing social needs. Shift work (especially night shift) is known to negatively affect workers’ health and well-being. We aimed to compare shift and non-shift workers in terms of depressive symptoms and related factors.

Methods: Data were obtained from the 6th Korea National Health and Nutrition Examination Survey conducted in 2013. Of the 994 participants, 357 were women (all standard workers aged ≥19 years). Based on the information provided by a self-administered questionnaire, subjects were categorized according to work schedule (shift/non-shift). Differences in general characteristics (sociodemographic/health/work factors) between shift and non-shift workers were assessed using the t-test, chi-square test, linear-by-linear association, and Fisher exact test. To evaluate the factors that affect depression, a logistic regression analysis was performed for the general characteristic parameters.

Results: Shift workers (9.5%) had higher incidence of depressive symptoms over 2 weeks than the non-shift workers (4.6%; P=0.024). The factors that affected depression were sex (female: odds ratio [OR], 2.94; P=0.001), stress perception (yes: OR, 3.43; P<0.001), suicidal ideation (yes: OR, 15.25; P<0.001), sleep duration (<7 hours/day: OR, 2.16; P=0.021), and occupation class (manual: OR, 2.20; P=0.048) in all subjects.

Conclusion: Shift work had a negative effect on workers in terms of depressive symptoms. Shift workers faced harsher conditions than the non-shift workers. Female-sex, stress, suicide ideation, lack of sleep, and manual work were associated with higher depressive symptoms among the workers. Therefore, the working environment should be improved to prevent these depression triggers.
KEYWORD
Depressive Symptom , Shift Work , Health Surveys , Mental Health , Circadian Rhythm
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