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BRITISH JOURNAL OF PSYCHIATRY
卷 176, 期 -, 页码 568-575出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1192/bjp.176.6.568
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Background Depression may be associated with cognitive decline in elderly people with impaired cognition. Aims To investigate whether depressed elderly people with normal cognition are at increased risk of cognitive decline and Alzheimer's disease. Methods Two independent samples of older people with normal cognition were selected from the community-based Amsterdam study of the Elderly (AMSTEL) and the Longitudinal Aging Study Amsterdam (LASA). In AMSTEL, depression was assessed by means of the Geriatric Mental State Schedule. Clinical diagnoses of incident Alzheimer's disease were made using a two-step procedure. In LASA, depression was assessed with the Center for Epidemiologic Studies Depression Scale. Cognitive decline was defined asa drop of greater than or equal to 3 on the Mini-Mental State Examination at follow-up. Results Both in the AMSTEL and the LASA sample, depression was associated with an increased risk of Alzheimer's disease and cognitive decline, respectively, but only in subjects with higher levels of education. Conclusions In a subgroup of more highly educated elderly people, depression may be an early manifestation of Alzheimer's disease before cognitive symptoms become apparent. Declaration of interest Grants detailed in Acknowledgements. No conflict of interest.
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