JOURNAL ARTICLE

Frailty and Risk of Dementia in Mild Cognitive Impairment Subtypes

David D Ward, Lindsay M K Wallace, Kenneth Rockwood
Annals of Neurology 2021 March 11
33704823
Risk factors for developing dementia from mild cognitive impairment (MCI) probably differ between MCI subtypes. We investigated how frailty relates to dementia risk in amnestic MCI (a-MCI; n = 2,799) and non-amnestic MCI (na-MCI; n = 629) in the National Alzheimer's Coordinating Center database. Although higher frailty increased dementia risk for people with either a-MCI or na-MCI, the larger risk was in na-MCI (interaction hazard ratio = 1.35 [95% confidence interval = 1.15-1.59], p < 0.001). Even after the onset of clinically significant cognitive impairment, poor general health, quantified by a high degree of frailty, is a significant risk for dementia. ANN NEUROL 2021.

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