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. 2020 Mar 4;15(3):e0229693.
doi: 10.1371/journal.pone.0229693. eCollection 2020.

Association between shift work and poor sleep quality in an Asian multi-ethnic working population: A cross-sectional study

Thuan-Quoc Thach  1 , Dhiya Mahirah  1 , Gerard Dunleavy  1 , Yichi Zhang  1 , Nuraini Nazeha  1 , Yuri Rykov  1 , Audrey Nah  1 , Adam Charles Roberts  2 , George I Christopoulos  3 , Chee-Kiong Soh  4 , Josip Car  1
Affiliations

Association between shift work and poor sleep quality in an Asian multi-ethnic working population: A cross-sectional study

Thuan-Quoc Thach et al. PLoS One. .

Abstract

Background: We aimed to examine the association between shift work and sleep quality in a diverse occupational type.

Methods: This was a cross-sectional study of self-reported sleep quality in 424 workers aged ≥21 using the Pittsburgh Sleep Quality Index (PSQI). We divided workers into two categories based on their PSQI score: (a) ≤5 (good sleep quality) and (b) >5 (poor sleep quality). We used multiple logistic regressions to assess the association between shift work and sleep quality adjusted for potential confounders.

Results: The mean age was 39.2 (SD = 11.3) years, with shift workers being older than their counterparts. Most workers were of Chinese ethnicity (63.9%). Males were significantly more likely to undertake shift work than females (89% v 11%, p-value<0.001), but it should be noted that the majority of workers was male (78.8%) in this sample of workers. Shift workers had a 198% increased odds of poor sleep quality compared to non-shift workers (OR = 2.98; 95% CI:1.53-5.81).

Conclusion: Shift work was significantly and independently associated with increased odds of poor sleep quality in this sample of workers. The present findings may inform employment guidelines and help develop workplace health promotion interventions aimed at improving sleep quality among workers and ultimately lead to a healthier workforce.

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Conflict of interest statement

NO authors have competing interests.

Figures

Fig 1
Fig 1. Flow diagram of recruitment process of study participants.
See this image and copyright information in PMC

References

    1. World Health Organization. International Agency for Research on Cancer. Painting, firefighting, and shiftwork. IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, 98.; 2010. Report No.: 98. - PMC - PubMed
    1. McMenamin T. A time to work: recent trends in shift work and flexible schedules. Monthly Labor Review. 2007:3–15.
    1. Paoli P MD. Third European Survey on Working Conditions 2000. European Foundation for the Improvement of Living and Working Conditions.
    1. Suwazono Y, Dochi M, Sakata K, Okubo Y, Oishi M, Tanaka K, et al. A longitudinal study on the effect of shift work on weight gain in male Japanese workers. Obesity (Silver Spring). 2008;16(8):1887–93. - PubMed
    1. Knutsson A, Bøggild H. Gastrointestinal disorders among shift workers. Scandinavian Journal of Work, Environment & Health. 2010;36(2):85–95. - PubMed

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