The Impact of Sleep Timing, Sleep Duration, and Sleep Quality on Depressive Symptoms and Suicidal Ideation amongst Japanese Freshmen: The EQUSITE Study
Joint Authors
Supartini, Atin
Honda, Takanori
Basri, Nadzirah A.
Haeuchi, Yuka
Chen, Sanmei
Ichimiya, Atsushi
Kumagai, Shuzo
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-03-03
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Aim.
The aim of this study was to identify the impact of bedtime, wake time, sleep duration, sleep-onset latency, and sleep quality on depressive symptoms and suicidal ideation amongst Japanese freshmen.
Methods.
This cross-sectional data was derived from the baseline survey of the Enhancement of Q-University Students Intelligence (EQUSITE) study conducted from May to June, 2010.
A total of 2,631 participants were recruited and completed the following self-reported questionnaires: the Pittsburgh Sleep Quality Index (PSQI), the Center for Epidemiologic Studies Depression Scale (CES-D), and the original Health Support Questionnaires developed by the EQUSITE study research team.
Results.
Of 1,992 participants eligible for analysis, 25.5% ( n = 507 ) reported depressive symptoms (CES-D total score ≥ 16), and 5.8% ( n = 115 ) reported suicidal ideation.
The present study showed that late bedtime (later than 01:30), sleep-onset latency (≥30 minutes), and poor sleep quality showed a marginally significant association with depressive symptoms.
Poor sleep quality was seen to predict suicidal ideation even after adjusting for depressive symptoms.
Conclusion.
The current study has important implications for the role of bedtime in the prevention of depressive symptoms.
Improving sleep quality may prevent the development of depressive symptoms and reduce the likelihood of suicidal ideation.
American Psychological Association (APA)
Supartini, Atin& Honda, Takanori& Basri, Nadzirah A.& Haeuchi, Yuka& Chen, Sanmei& Ichimiya, Atsushi…[et al.]. 2016. The Impact of Sleep Timing, Sleep Duration, and Sleep Quality on Depressive Symptoms and Suicidal Ideation amongst Japanese Freshmen: The EQUSITE Study. Sleep Disorders،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1118058
Modern Language Association (MLA)
Supartini, Atin…[et al.]. The Impact of Sleep Timing, Sleep Duration, and Sleep Quality on Depressive Symptoms and Suicidal Ideation amongst Japanese Freshmen: The EQUSITE Study. Sleep Disorders No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1118058
American Medical Association (AMA)
Supartini, Atin& Honda, Takanori& Basri, Nadzirah A.& Haeuchi, Yuka& Chen, Sanmei& Ichimiya, Atsushi…[et al.]. The Impact of Sleep Timing, Sleep Duration, and Sleep Quality on Depressive Symptoms and Suicidal Ideation amongst Japanese Freshmen: The EQUSITE Study. Sleep Disorders. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1118058
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118058