title: Shift-work disorder and sleep-related environmental factors in the manufacturing industry.
abstract: The aim of this study was to examine the relationship between shift-work disorder (SWD) and environmental and somatic factors related to falling asleep among rapidly rotating shift workers in a manufacturing industry.A total of 556 male workers were recruited to complete a self-administered questionnaire regarding age, shift work experience, lifestyle, and family structure; the Epworth sleepiness scale (ESS); the Pittsburgh sleep quality index (PSQI); and the Horne and Ostberg questionnaire, a questionnaire for environmental and somatic factors related to falling asleep. We classified workers according to having SWD or not, and compared workers with SWD with those without this disorder in terms of all items covered in the aforementioned questionnaires. A total of 208 workers (62.8%) working rapidly rotating shifts were diagnosed with SWD. The ESS and PSQI scores and scores for environmental and somatic factors were significantly higher in workers with SWD than in those without this disorder. The ESS scores and scores for environmental and somatic factors were also associated with SWD in the logistic regression analyses. We suggest that susceptibility to SWD in the manufacturing industry may be associated with environmental and somatic factors related to falling asleep.
authors: Department of Public Health, Faculty of Medicine, University of Miyazaki, Japan.
authors: Yukari
authors: Y
authors: Taniyama
authors: Arisa
authors: A
authors: Nakamura
authors: Takenori
authors: T
authors: Yamauchi
authors: Shouhei
authors: S
authors: Takeuchi
authors: Yoshiki
authors: Y
authors: Kuroda
mesh_terms: D000328:Adult; D004198:Disease Susceptibility; D004777:Environment; D005191:Family Characteristics; D006801:Humans; D007221:Industry; D008019:Life Style; D008027:Light; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009622:Noise; D016272:Occupational Health; D012890:Sleep; D020178:Sleep Disorders, Circadian Rhythm / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D011795:Surveys and Questionnaires; D014940:Work Schedule Tolerance