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Ann Geriatr Med Res  <  Volume 21(3); 2017 <  Articles

Ann Geriatr Med Res 2017; 21(3): 115-122  https://doi.org/10.4235/agmr.2017.21.3.115
Depressive Mood and the Risk of Future Functional Decline in an Elderly Population
Yun Jung Cho1, Young Ho Hong2, Hyung Jun Park1, Ji Eun Lee1, Jae Moon Yun1, Dong Wook Shin3, Ki Young Son1, Belong Cho1, Sang Hyuck Kim4
1Department of Family Medicine, Seoul National University Hospital, Seoul, 2G Clinic, Seoul, 3Department of Family Medicine, Seoul Samsung Hospital, Seoul, 4Department of Family Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
Correspondence to: Sang Hyuck Kim, MD
Department of Family Medicine, Seoul National University Bundang Hospital, 82 Gumi-ro 173beon-gil, Bundang-gu, Seongnam 13620, Korea
Tel: +82-31-787-7808 Fax:+82-31-787-4834 E-mail: fromage5@naver.com
Received: June 16, 2017; Revised: August 16, 2017; Accepted: August 17, 2017; Published online: September 30, 2017.
© The Korea Geriatrics Society. All rights reserved.

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background: As the elderly population increases in number, prediction and prevention of functional decline in this population are of great importance. This study evaluated whether depression in an elderly population could predict functional decline in activities of daily living and the components of instrumental activities of daily living 2 years after baseline. Methods: Data from the Korean Longitudinal Study of Aging panel, a national, representative sample of aging Koreans, were used. The subjects were the elderly aged 65 years or older who had no disabilities that hindered them from performing activities of daily living at baseline. Depression was measured using the Short-form (10-item) Center for Epidemiological Studies Depression Scale. Multivariable logistic regression analysis was performed to evaluate the effect of functional impairment according to baseline depression. Results: Of the 3,477 participants, 166 (4.8%) showed at least 1 impairment in the 7 activities of daily living (ADL) categories after 2 years. The participants with depression (scored 15 or higher on the depression scale) were more likely to have functional decline 2 years later (odds ratio, 1.82; 95% confidence interval, 1.23-2.71). All the components of the ADL had an increased tendency to develop functional decline (all odds ratios>1.00). Furthermore, negative items were significantly associated with functional decline (all p-values adjusted for trend<0.05). Conclusion: The participants with depression were more likely to have functional decline 2 years later. Such decline was observed in all types of ADL. Therefore, depression should be monitored and used as a predictor of functional decline in elderly adults.
Keywords: Depression, Elderly, Frail elderly, Functional decline, Health status

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