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Free Recall Episodic Memory Performance Predicts Dementia Ten Years prior to Clinical Diagnosis: Findings from the Betula Longitudinal Study
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Number of Authors: 6
2015 (English)In: Dementia and geriatric cognitive disorders extra, E-ISSN 1664-5464, Vol. 5, no 2, 191-202 p.Article in journal (Refereed) Published
Abstract [en]

Background/Aims: Early dementia diagnosis is a considerable challenge. The present study examined the predictive value of cognitive performance for a future clinical diagnosis of late-onset Alzheimer's disease or vascular dementia in a random population sample. Methods: Cognitive performance was retrospectively compared between three groups of participants from the Betula longitudinal cohort. Group 1 developed dementia 11-22 years after baseline testing (n = 111) and group 2 after 1-10 years (n = 280); group 3 showed no deterioration towards dementia during the study period (n = 2,855). Multinomial logistic regression analysis was used to investigate the predictive value of tests reflecting episodic memory performance, semantic memory performance, visuospatial ability, and prospective memory performance. Results: Age-and education-corrected performance on two free recall episodic memory tests significantly predicted dementia 10 years prior to clinical diagnosis. Free recall performance also predicted dementia 11-22 years prior to diagnosis when controlling for education, but not when age was added to the model. Conclusion: The present results support the suggestion that two free recall-based tests of episodic memory function may be useful for detecting individuals at risk of developing dementia 10 years prior to clinical diagnosis.

Place, publisher, year, edition, pages
2015. Vol. 5, no 2, 191-202 p.
Keyword [en]
Episodic memory, Cognitive markers, Dementia, Predictive validity
National Category
Neurosciences Neurology
URN: urn:nbn:se:su:diva-126419DOI: 10.1159/000381535ISI: 000367324000001PubMedID: 26078750OAI: diva2:899326
Available from: 2016-02-01 Created: 2016-02-01 Last updated: 2016-02-01Bibliographically approved

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