Skipping breakfast, poor sleep quality, and Internet usage and their relation with unhappiness in Japanese adolescents

• Yuichiro Otsuka,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Resources, Software, Visualization, Writing – original draft

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, 30–1 Oyaguchi-kamimachi, Itabasi-ku, Tokyo, Japan

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• Yoshitaka Kaneita ,

  Roles Conceptualization, Data curation, Investigation, Project administration, Resources, Writing – review & editing

  * E-mail: nusmpublichealth@gmail.com

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, 30–1 Oyaguchi-kamimachi, Itabasi-ku, Tokyo, Japan

  http://orcid.org/0000-0003-1287-7590

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• Osamu Itani,

  Roles Data curation, Investigation, Software

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, 30–1 Oyaguchi-kamimachi, Itabasi-ku, Tokyo, Japan

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• Maki Jike,

  Roles Data curation, Resources

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, 30–1 Oyaguchi-kamimachi, Itabasi-ku, Tokyo, Japan

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• Yoneatsu Osaki,

  Roles Conceptualization, Data curation, Funding acquisition, Resources, Supervision

  Affiliation Division of Environmental and Preventive Medicine, Department of Social Medicine, Faculty of Medicine, Tottori University, Yonago-city, Tottori, Japan

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• Susumu Higuchi,

  Roles Conceptualization, Data curation, Resources

  Affiliation National Hospital Organization Kurihama Medical and Addiction Center, Yokosuka-city, Kanagawa, Japan

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• Hideyuki Kanda,

  Roles Conceptualization, Data curation, Resources

  Affiliation Department of Public Health, Shimane University Faculty of Medicine, Matsue-city, Shimane, Japan

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• Aya Kinjo,

  Roles Data curation, Resources

  Affiliation Division of Environmental and Preventive Medicine, Department of Social Medicine, Faculty of Medicine, Tottori University, Yonago-city, Tottori, Japan

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• Yuki Kuwabara,

  Roles Data curation, Resources

  Affiliation Division of Environmental and Preventive Medicine, Department of Social Medicine, Faculty of Medicine, Tottori University, Yonago-city, Tottori, Japan

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• Hisashi Yoshimoto

  Roles Data curation, Resources

  Affiliation Department of Family Medicine, General Practice and Community Health, Faculty of Medicine, University of Tsukuba, Tsukuba-city, Ibaraki, Japan

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