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KMID : 0361520110220020096
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Korean Journal of Psychopharmacology
2011 Volume.22 No. 2 p.96 ~ p.104
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Role of Circadian Types and Depressive Mood on Sleep Quality of Shift Work Nurses
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Kim Hyun-Sook
Choi Kyeong-Sook
Eom Mi-Ran
Joo Eun-Jeong
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Abstract
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Objective: This study was done to explore the relationship between circadian types, depressive mood, and sleep quality and to identify the mediating effect of depression between circadian types and sleep quality in shift work nurses.
Methods: Participants were 510 females selected by convenience sampling. Data were collected from October to November 2008 using the Composite Scale for Morningness, Beck Depression Inventory, and Pittsburgh Sleep Quality Index-Korean. The data were analyzed using descriptive statistics, Pearson correlation coefficients, logistic regression and multiple regression.
Results: There were significant relationships between sleep quality and circadian types(r=-0.160, p<0.001), and depressive mood (r=0.438, p<0.001). In addition, the circadian types was significantly correlated with depressive mood (r=-0.236, p<0.001). Depressive mood showed mediating effect between circadian types and sleep quality (beta=0.424, p<0.001). Evening type subjects showed higher scores in depressive mood and sleep quality than morning type ones.
Conclusion: These results suggest that depression and circadian rhythm management in nurses with evening type would contribute to the prevention of sleep disturbance.
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KEYWORD
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Circadian rhythm, Depression, Sleep, Shift-work nurse
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