Factors Affecting Unhappiness at School among Japanese Adolescents: An Epidemiological Study

• Hisayoshi Morioka,

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, Tokyo, Japan

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• Osamu Itani ,

  * E-mail: itani.osamu@nihon-u.ac.jp

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, Tokyo, Japan

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• Yoshitaka Kaneita,

  Affiliation Department of Public Health and Epidemiology, Faculty of Medicine, Oita University, Oita, Japan

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• Hajime Iwasa,

  Affiliation Department of Public Health, Fukushima Medical University School of Medicine, Fukushima, Japan

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• Maki Ikeda,

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, Tokyo, Japan

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• Ryuichiro Yamamoto,

  Affiliation Division of Clinical Psychology, Health Care and Special Support, Graduate School of Education, Joetsu University of Education, Niigata, Japan

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• Yoneatsu Osaki,

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

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• Hideyuki Kanda,

  Affiliation Department of Public Health, Shimane University Faculty of Medicine, Shimane, Japan

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• Sachi Nakagome,

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, Tokyo, Japan

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• Takashi Ohida

  Affiliation Division of Public Health, Department of Social Medicine, Nihon University School of Medicine, Tokyo, Japan

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