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Large Questionnaire Survey on Sleep Duration and Insomnia Using the TV Hybridcast System by Japan Broadcasting Corporation (NHK)

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  • Kazuki Ito

    (Department of Anesthesiology, Shiga University of Medical Science, Shiga 520-2192, Japan
    Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan)

  • Hiroshi Kadotani

    (Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan)

  • Isa Okajima

    (Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan
    Department of Psychological Counseling, Faculty of Humanities, Tokyo Kasei University, Tokyo 173-8602, Japan)

  • Ayaka Ubara

    (Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan
    Graduate School of Psychology, Doshisha University, Kyoto 610-0394, Japan
    JSPS Research Fellowships, Tokyo 102-0083, Japan)

  • Mamoru Ichikawa

    (Japan Broadcasting Corporation, Tokyo 150-8001, Japan)

  • Chie Omichi

    (Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan)

  • Towa Miyamoto

    (Department of Psychiatry, Shiga University of Medical Science, Shiga 520-2192, Japan)

  • Arichika Matsuda

    (Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan)

  • Yukiyoshi Sumi

    (Department of Psychiatry, Shiga University of Medical Science, Shiga 520-2192, Japan)

  • Hirotoshi Kitagawa

    (Department of Anesthesiology, Shiga University of Medical Science, Shiga 520-2192, Japan)

Abstract

Background: Japanese people are known to have the shortest sleep duration in the world. To date, no study has assessed a large Japanese population for insomnia and sleep duration. Methods: We performed an Ιnternet-based survey in association with a national television (TV) program. Questionnaire data were collected not only through personal computers, tablets, and smartphones, but also through the Hybridcast system, which combines broadcasts over airwaves with broadband data provided via the Internet using the TV remote controller. The Athens Insomnia Scale (AIS) was used to assess insomnia. Results: A total of 301,241 subjects participated in the survey. Participants slept for an average of 5.96 ± 1.13 h; the average AIS score was 6.82 ± 3.69. A total of 26.1% of male and 27.1% of female participants had both insomnia (AIS ≥ 6) and short sleep duration (<6 h). Responses were recorded through the Hybridcast system for 76.4% of the elderly (age ≥ 65 years) subjects and through personal computers, tablets, or smartphones for 59.9–82.7% of the younger subjects (age ≤ 65 years). Conclusions: Almost a quarter of the Japanese participants presented short sleep duration and insomnia. Furthermore, the Hybridcast system may be useful for performing large internet-based surveys, especially for elderly individuals.

Suggested Citation

  • Kazuki Ito & Hiroshi Kadotani & Isa Okajima & Ayaka Ubara & Mamoru Ichikawa & Chie Omichi & Towa Miyamoto & Arichika Matsuda & Yukiyoshi Sumi & Hirotoshi Kitagawa, 2021. "Large Questionnaire Survey on Sleep Duration and Insomnia Using the TV Hybridcast System by Japan Broadcasting Corporation (NHK)," IJERPH, MDPI, vol. 18(5), pages 1-10, March.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:5:p:2691-:d:512296
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    1. Isa Okajima & Towa Miyamoto & Ayaka Ubara & Chie Omichi & Arichika Matsuda & Yukiyoshi Sumi & Masahiro Matsuo & Kazuki Ito & Hiroshi Kadotani, 2020. "Evaluation of Severity Levels of the Athens Insomnia Scale Based on the Criterion of Insomnia Severity Index," IJERPH, MDPI, vol. 17(23), pages 1-9, November.
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