J Korean Geriatr Psychiatry.  2020 Apr;24(1):1-9.

Frequency of Depressive Disorders According to Cognitive Continuum in the Elderly Living in the Community

  • 1Department of Psychiatry,1 Biomedical Research Institute, Korea
  • 2Department of Psychiatry, Kangwon National University School of Medicine, Chuncheon, Korea
  • 3Department of Psychiatry, Kangwon National University Hospital, Chuncheon, Korea
  • 4Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
  • 5Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
  • 6Department of Brain and Cognitive Science, Seoul National University College of Natural Sciences, Seoul, Korea
  • 7Department of Psychiatry, Dongguk University Gyeongju Hospital, Gyeongju, Korea
  • 8Department of Psychiatry, Gyeongsang National University School of Medicine, Jinju, Korea
  • 9Department of Neuropsychiatry, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
  • 10Department of Psychiatry, School of Medicine, Chungnam National University, Daejeon, Korea
  • 11Department of Psychiatry, School of Medicine, Konkuk University, Konkuk University Chungju Hospital, Chungju, Korea
  • 12Department of Neuropsychiatry, Jeju National University Hospital, Jeju, Korea
  • 13Department of Neuropsychiatry, Kyunggi Provincial Hospital for the Elderly, Yongin, Korea
  • 14Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
  • 15Department of Neuropsychiatry, Inje University Sanggye Paik Hospital, Seoul, Korea
  • 16Department of Psychiatry, Dankook University Hospital, Cheonan, Korea
  • 17Department of Psychiatry, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
  • 18Department of Psychiatry, Yonsei University Wonju Severance Christian Hospital, Wonju, Korea


We investigated the frequency of depressive disorders in the elderly with normal cognition (NC), mild cognitive impairment (MCI) and dementia patients living in the community to find out the association between cognitive disorders and depressive disorders in the community dwelling elderly.
6,262 baseline study subjects from November 2010 through October 2012 were enrolled based on the Korean longitudinal study on cognitive aging and dementia which is the first nationwide multi-center population based prospective cohort study in Korea. Diagnosis of MCI, dementia, major depressive disorder (MDD), minor depressive disorder (mDD) and subsyndromal depression (SSD) was made by psychiatrists with expertise in dementia based on the appropriate diagnostic criteria.
4,303 NC, 1,737 MCI, 222 dementia were enrolled. The frequency of MDD, mDD, SSD were highest in dementia and lowest in NC and showed significant difference among three groups. The odds ratio also increased significantly in MCI and dementia compared with NC showing highest odds ratio in dementia.
Our findings propose that MCI and dementia in the community dwelling elderly were significantly associated with various types of depressive disorders showing highest association tendency in dementia.


Depression; Dementia; Mild cognitive impairment; Community
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