The relationship between marital status and multifactorial sleep in Japanese day workers

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Abstract
Unmarried people often have disorderly lifestyles, and sleep problems (e.g., insomnia, short sleep duration, social jetlag) are becoming more complex due to the modern 24-h society. To improve health promotion measures for unmarried people, this study examined the relationship between marital status and sleep assessed as a multifactorial structure (phase, quality, quantity) in Japanese day workers. A cross-sectional survey was conducted with employees at five workplaces in Japan. Participants indicated their marital status, and the 3-Dimensional Sleep Scale measured sleep condition. We used scale cutoff values to define poor sleep phase, quality, and quantity (scores below the cutoff). “All poor sleep” and “all good sleep” were defined as when all scores were below or above the cutoff, respectively. Data from 786 participants (578 men, 208 women) were analyzed. Multivariate analysis showed that being unmarried was significantly related to poor sleep phase, quality, and quantity, with increased odds ratios. In unmarried participants, odds ratios (OR) were highest for poor sleep quantity in men (OR: 2.15) and poor sleep phase in women (OR: 2.73). All poor sleep showed the highest odds ratio for both unmarried men (OR: 2.74) and women (OR: 6.13), while unmarried men showed significantly decreased odds ratios for all good sleep (OR: 0.51). The finding that being unmarried was more closely associated with poor sleep quality and quantity in men, and more closely associated with poor sleep phase in women, could greatly contribute to creating measures to promote improved sleep in unmarried people.
Funding Information
  • Grants-in-Aid for Scientific Research (26870777)

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