An Epidemiological Study on Psychosocial Factors Associated with Depression among Japanese General Adult Population

  • Konno Chisato
    Department of Psychiatry, School of Medicine, Nihon University
  • Suzuki Masahiro
    Department of Psychiatry, School of Medicine, Nihon University
  • Furihata Ryuji
    Department of Psychiatry, School of Medicine, Nihon University
  • Takahashi Sakae
    Department of Psychiatry, School of Medicine, Nihon University
  • Kaneita Yoshitaka
    Department of Public Health and Epidemiology, Faculty of Medicine, Oita University
  • Ohida Takashi
    Division of Public Health, Department of Social Medicine, School of Medicine, Nihon University
  • Uchiyama Makoto
    Department of Psychiatry, School of Medicine, Nihon University

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Other Title
  • 一般人口におけるうつ病の心理社会的な要因に関する疫学的研究
  • イッパン ジンコウ ニ オケル ウツビョウ ノ シンリ シャカイテキ ナ ヨウイン ニ カンスル エキガクテキ ケンキュウ

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In order to elucidate an association between depression and psychological factors, we conducted crosssectional surveys with face-to-face interviews in 2009 as part of the Nihon University Sleep and Mental Health Epidemiology Project (NUSMEP). Data from 2,559 individuals sampled randomly from the general adult Japanese population were analyzed. The Japanese version of the Mini-International Neuropsychiatric Interview was used to assess the presence of depression. Sociodemographic variables, life history, life events, stress-coping strategies, the personality traits of neuroticism, and Melancholic type (Typus melancholicus) were examined in the interview. In relation to depression, multiple logistic regression analyses revealed significant positive odds ratios (OR) for poor perceived mental health (OR 4.61), the personality trait of neuroticism (OR 3.82), perceived lack of parental affection during childhood (OR 2.41), present personal health problems (OR 2.41), the coping strategy of “Bearing without action” (OR 1.88), and a family history of depression (OR 1.79), but a significant negative OR for the coping strategy of “Taking one’s ease” (OR 0.47). The fact that the personality trait associated with depression was neuroticism but not Typus melancholicus suggests that the premorbid personality hypothesis that originated in an anthropologic observation of Typus melancholicus, which has been widely believed in Japan, should be reconsidered based on epidemiological data.

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