Relationship between chronotype and depressive symptoms among newly hired hospital nurses in the Republic of Korea
- Affiliations
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- 1Department of Environmental Medicine, School of Medicine, Ewha Womans University, Seoul, .
- 2Graduate Program in System Health Science and Engineering, College of Medicine, Ewha Womans University, Seoul, .
- 3Department of Occupational and Environmental Medicine, Ewha Womans University Mokdong Hospital, Seoul, .
- 4Department of Occupational and Environmental Medicine, Catholic Kwandong University International St. Mary’s Hospital, Incheon, .
- 5Department of Preventive Medicine, College of Medicine, Hanyang University, Seoul, .
- 6School of Public Health, Hanyang University, Seoul, .
- KMID: 2567290
- DOI: http://doi.org/10.35371/aoem.2022.34.e32
Abstract
Background This study was conducted to examine the relationship between chronotype and depressive symptoms to provide grounded knowledge in establishing nurses’ health promotion strategies.
Methods The subjects of this study were 493 newly hired nurses working in 2 general hospitals within the university from September 2018 to September 2020. Sociodemographic and work-related characteristics were collected from a medical examination database and a self-reported questionnaire. These included sex, age, marital status, living situation, education level, alcohol consumption, physical activity, prior work experience before 3 months, workplace, and departments. To analyze the associations between the chronotype and depressive symptoms, multiple logistic regression analyses were performed to calculate odds ratios (ORs).
Results Among participants, 9.1% had depressive symptoms and 16.4% had insomnia. The subjects are divided into morningness (30.2%), intermediate (48.7%), and eveningness (21.1%). The multiple logistic regression analysis controlling for age, living status, education level, alcohol consumption, physical activity, workplace, prior work experience before 3 months, and insomnia, revealed that the OR of depressive symptoms in the eveningness group was 3.71 (95% confidence interval [CI]: 1.50–9.18) compared to the morningness group, and the R2 value was 0.151. It also can be confirmed that insomnia symptoms have a statistically significant effect on depressive symptoms (OR: 2.16, 95% CI: 1.03–4.52).
Conclusions Our findings suggest that evening-type nurses are more likely to have depression than morning-type nurses. We should consider interventions in a high-risk group such as the evening type nurses to reduce depressive symptoms in nurses.
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