Depression and risk of cognitive decline and Alzheimer's disease. Results from two prospective community-based studies in the Netherlands.

M.I. Geerlings, R.A. Schoevers, A. Beekman, C. Jonker, D.J.H. Deeg, B.A. Schmand, H.J. Ader, L.M. Bouter, W. van Tilburg

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    Abstract

    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 as a drop of ≥ 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.
    Original languageEnglish
    Pages (from-to)568-575
    Number of pages8
    JournalBritish Journal of Psychiatry
    Volume176
    DOIs
    Publication statusPublished - 2000

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    Geerlings, M. I., Schoevers, R. A., Beekman, A., Jonker, C., Deeg, D. J. H., Schmand, B. A., ... van Tilburg, W. (2000). Depression and risk of cognitive decline and Alzheimer's disease. Results from two prospective community-based studies in the Netherlands. British Journal of Psychiatry, 176, 568-575. https://doi.org/10.1192/bjp.176.6.568