Shift work disorder and related influential factors among shift workers in China

Dongfang Wang, Huilin Chen, Dingxuan Chen, Zijuan Ma, Yifan Zhang, Tong Wang, Qian Yu, Jiaqi Jiang, Zihao Chen, Fujie Li, Longlong Zhao, Fang Fan, Xianchen Liu

Research output: Contribution to journalArticlepeer-review

21 Citations (SciVal)


Background: Shift work may cause insomnia and sleepiness in individuals. The present study aimed to exam shift work disorder (SWD), and to investigate their associations with individual characteristics. Methods: A total of 1833 shift workers were assessed using the Pittsburg Sleep Quality Index, Epworth Sleepiness Scale (ESS), Composite Scale of Morningness (CSM), Circadian Type Inventory (CTI), Center for Epidemiologic Studies–Depression Scale (CES-D), Beck Anxiety Inventory (BAI) and other self-compiled socio-demographic questionnaires. Results: In the current sample, 17.1% shift workers have experienced insomnia symptoms, 20.9% were tested for daytime sleepiness, and 19.9% were categorized as having SWD. Logistics regressions revealed that history of mental disorders (OR = 2.04, 95% CI = 1.30–3.21), chronic physical illness (OR = 1.53, 95% CI = 1.17–1.99), CES-D scores (OR = 1.03, 95% CI = 1.02–1.05), BAI scores (OR = 1.04, 95% CI = 1.03–1.06), languid/vigorous tendencies (OR = 1.06, 95% CI = 1.03–1.10) were positively associated with the onset of SWD, while morningness (OR = 0.97, 95% CI = 0.94–0.99) decreased the odds of SWD onset. Conclusions: These findings suggested that attention should be drawn to individuals with mental and chronic diseases in when scheduling work shifts. While SWD and its associates should be considered when providing psychological services to shift workers.

Original languageEnglish
Pages (from-to)451-456
Number of pages6
JournalSleep Medicine
Early online date15 Mar 2021
Publication statusPublished - 31 May 2021

Bibliographical note

Funding Information:
The present study was funded by National Natural Science Foundation of China (Grant No. 31271096 , 31900789 , 31871129 ); Research on the Processes and Repair of Psychological Trauma in Youth, Project of Key Institute of Humanities and Social Sciences , MOE (Grant No. 16JJD190001 ); Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme ( GDUPS 2016 ); and Graduate Research and Innovation Project of School of Psychology, South China Normal University ( PSY–SCNU202017 ).

Publisher Copyright:
© 2021 Elsevier B.V.

Copyright 2021 Elsevier B.V., All rights reserved.


  • Anxiety
  • Depressive symptoms
  • Languidity
  • Morningness
  • Shift work disorder

ASJC Scopus subject areas

  • General Medicine


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