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. 2017 Oct 7;55(5):455-459.
doi: 10.2486/indhealth.2017-0055. Epub 2017 Jul 6.

The relationship between sleep disturbances and depression in daytime workers: a cross-sectional structured interview survey

Hiroki Ikeda  1 , Kotaro Kayashima  1 , Takeshi Sasaki  1 , Sachiko Kashima  2 , Fumihiko Koyama  3
Affiliations

The relationship between sleep disturbances and depression in daytime workers: a cross-sectional structured interview survey

Hiroki Ikeda et al. Ind Health. .

Abstract

The aim of this study was to clarify the relationship between sleep disturbances and depression in daytime workers using a structured interview. A total of 1,184 daytime workers were enrolled. We evaluated difficulty initiating sleep (DIS), difficulty maintaining sleep (DMS), early morning awakening (EMA), and global insomnia scores (ISs) in all participants. As a result, the prevalences of DIS, DMS, and EMA were 16%, 46%, and 22 %, respectively. IS was significantly correlated with depression score. Additionally, although all IS subscales (i.e., DIS, DMS, and EMA) were significantly associated with depression score, the main factor contributing to depression score was DIS. Thus, the present study reveals that sleep disturbances and especially DIS are associated with depression in daytime workers.

Keywords: Hamilton depression rating scale; Insomnia; Japanese daytime workers; Sleep problems; Sleep quality.

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