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Association of Subjective Quality and Quantity of Sleep with Quality of Life among a General Population

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  • Kentaro Matsui

    (Department of Laboratory Medicine, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo 1878551, Japan
    Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan
    Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo 1510053, Japan)

  • Takuya Yoshiike

    (Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan)

  • Kentaro Nagao

    (Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan)

  • Tomohiro Utsumi

    (Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan
    Department of Psychiatry, The Jikei University School of Medicine, Tokyo 1058461, Japan)

  • Ayumi Tsuru

    (Department of Laboratory Medicine, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo 1878551, Japan
    Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan)

  • Rei Otsuki

    (Department of Laboratory Medicine, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo 1878551, Japan
    Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan
    Department of Psychiatry, Nihon University School of Medicine, Tokyo 1738610, Japan)

  • Naoko Ayabe

    (Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan
    Department of Regional Studies and Humanities, Faculty of Education and Human Studies, Akita University, Akita 0108502, Japan)

  • Megumi Hazumi

    (Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan)

  • Masahiro Suzuki

    (Department of Psychiatry, Nihon University School of Medicine, Tokyo 1738610, Japan)

  • Kaori Saitoh

    (Department of Psychiatry, Nihon University School of Medicine, Tokyo 1738610, Japan)

  • Sayaka Aritake-Okada

    (Department of Health Sciences, Saitama Prefectural University, Saitama 3438540, Japan)

  • Yuichi Inoue

    (Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo 1510053, Japan
    Department of Somnology, Tokyo Medical University, Tokyo 1608402, Japan)

  • Kenichi Kuriyama

    (Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 1878553, Japan)

Abstract

This study aimed to determine whether both subjective sleep quality and sleep duration are directly associated with quality of life (QOL), as well as indirectly associated with QOL through insomnia symptoms. Individuals aged 20–69 years without mental illness ( n = 9305) were enrolled in this web-based cross-sectional survey. The Short Form-8 was used to assess physical and mental QOL. We used the Pittsburgh Sleep Quality Index (PSQI) and extracted items related to subjective sleep quality and sleep duration. Insomnia symptoms were also extracted from the PSQI. The hypothesized models were tested using structural equation modeling. Worse sleep quality, but not shorter sleep duration, was related to worse physical QOL. Both worse sleep quality and shorter sleep duration were related to worse mental QOL. Insomnia symptoms mediated these relationships. Subgroup analyses revealed a U-shaped relationship between sleep duration and physical/mental QOL. However, the relationship between sleep quality and physical/mental QOL was consistent regardless of sleep duration. The results suggest that subjective sleep quality has a more coherent association with QOL than subjective sleep duration. Because of its high feasibility, a questionnaire on overall sleep quality could be a useful indicator in future epidemiological studies of strategies for improving QOL.

Suggested Citation

  • Kentaro Matsui & Takuya Yoshiike & Kentaro Nagao & Tomohiro Utsumi & Ayumi Tsuru & Rei Otsuki & Naoko Ayabe & Megumi Hazumi & Masahiro Suzuki & Kaori Saitoh & Sayaka Aritake-Okada & Yuichi Inoue & Ken, 2021. "Association of Subjective Quality and Quantity of Sleep with Quality of Life among a General Population," IJERPH, MDPI, vol. 18(23), pages 1-11, December.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:23:p:12835-:d:695769
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    References listed on IDEAS

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    1. Nato Darchia & Nikoloz Oniani & Irine Sakhelashvili & Mariam Supatashvili & Tamar Basishvili & Marine Eliozishvili & Lia Maisuradze & Katerina Cervena, 2018. "Relationship between Sleep Disorders and Health Related Quality of Life—Results from the Georgia SOMNUS Study," IJERPH, MDPI, vol. 15(8), pages 1-15, July.
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    1. Elizabeth J. Gifford & Stephen H. Boyle & Jacqueline Vahey & Kellie J. Sims & Jimmy T. Efird & Blair Chesnut & Crystal Stafford & Julie Upchurch & Christina D. Williams & Drew A. Helmer & Elizabeth R., 2022. "Health-Related Quality of Life by Gulf War Illness Case Status," IJERPH, MDPI, vol. 19(8), pages 1-16, April.

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