Citation

Zhou Z, Zhang Y, Sang L, Shen J, Lian Y. Int. J. Occup. Safety Ergonomics 2020; ePub(ePub): ePub.

Copyright

(Copyright © 2020, Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy, Publisher Informa - Taylor and Francis Group)

DOI

10.1080/10803548.2020.1826706

PMID

33076769

Abstract

PURPOSES: To understand the prevalence of sleep disorders among shift workers and analyze the relationship between sleep disorders and shift work.

MATERIALS AND METHODS: Baseline data were collected from subjects who were then followed for 2 years in a prospective cohort study. The cohort ultimately included 2453 people starting in May 2013, and follow-up with questionnaires was performed in July 2014 and October 2015. Sleep disorders were assessed with the Pittsburgh Sleep Quality Index (PSQI).

RESULTS: The risk of sleep disorders among two-shift (relative risk [RR]=1.318, 95% confidence interval [CI] [1.025,1.695]), three-shift (RR=1.326, 95% CI [1.048,1.679]), and four-shift (RR=1.334, 95% CI [1.062,1.675]) workers was higher than that among non-shift workers, and an increasing trend was observed in sleep disorders as the number of shifts increased.

CONCLUSIONS: Shift workers have a higher incidence of sleep disorders than non-shift workers. An increasing linear trend was observed between the number of shifts and sleep disorders. In the petroleum industry, it is necessary to decrease the frequency of shifts to reduce the incidence of sleep disorders among shift workers.

Language: en

Keywords

Cohort study; Shift work; Sleep disorder