Journal
ALZHEIMERS & DEMENTIA
Volume 12, Issue 3, Pages 262-271Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jalz.2015.02.011
Keywords
Dementia; Alzheimer's disease; Vascular dementia; Incidence; Risk factors; Prospective cohort study; Epidemiology; China
Categories
Funding
- Chinese government [96-096-05-01]
- China Medical Board of New York, Inc, New York [99-699]
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Introduction: There is a dearth of literature on the incidence of dementia in China. Methods: Using a stratified, multistage, cluster-sampling method, 16,921 nondemented participants >= 55 years were recruited from four regional centers in China in 1997 and followed up to 4.5 years. Cases were identified through a three-step protocol, according to standardized criteria for dementia, Alzheimer's dementia (AD), and vascular dementia (VaD). Results: The crude incidence in persons >65 years was 12.1/1000 person-years for dementia, 8.2/1000 person-years for AD, and 3.1/1000 person-years for VaD. After adjusting for sociodemographic factors, older age and lower education were associated with a higher risk of incident dementia, AD and VaD; regional difference was associated mainly with incidence of VaD (north vs. south: hazard ratio [HR] = 3.59); modestly with AD (east vs. west: HR = 1.55). Discussion: The incidence of dementia in Chinese population is comparable with that in Europe and United States. (C) 2016 The Alzheimer's Association. Published by Elsevier Inc. All rights reserved.
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