Work schedule differences in sleep problems of nursing home caregivers

Masaya Takahashi, Kazuyuki Iwakiri, Midori Sotoyama, Shigekazu Higuchi, Masako Kiguchi, Mamoru Hirata, Naomi Hisanaga, Teruyo Kitahara, Kazushi Taoda, Katsuo Nishiyama

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Nursing home caregivers (n=775; 604 women; mean age 33.6 years) were studied to examine how work schedules affect their sleep. The shift group (n=536) worked under a rotating two-shift system (n=365), a rotating three-shift system (n=66), or other types of shifts (n=78). The non-shift group included 222 caregivers. Participants completed a questionnaire about working conditions, sleep problems, health, lifestyle, and demographic factors. The two-shift caregivers reported the highest levels of difficulty initiating sleep (DIS, 37.6%), insomnia symptoms (43.0%), and poor quality of sleep (24.9%) among the groups. Adjusted odds ratios for these problems were significantly greater for the two-shift caregivers than for non-shift counterparts: DIS (odds ratio 2.86, 95% confidence interval 1.57-5.20), insomnia symptoms (2.33, 1.36-4.02), and poor sleep quality (2.15, 1.09-4.22). Our data suggest that working under a rotating two-shift system, which has a longer night shift, is associated with an elevated risk of sleep problems for nursing home caregivers.

Original languageEnglish
Pages (from-to)597-604
Number of pages8
JournalApplied Ergonomics
Issue number5
Publication statusPublished - Sept 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Human Factors and Ergonomics
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Safety, Risk, Reliability and Quality
  • Engineering (miscellaneous)


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