• Yi-Fang Chuang, Yi-Chien Liu, Hsin-Yi Tseng, Pei-Xuan Lin, Cheng-Yi Li, Ming-Hsiung Shih, Kuan-Chia Lin, TienYu Owen Yang, Sui-Hing Yan, and Yen-Ling Chiu.
• Institute of Public Health, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Psychiatry, Far Eastern Memorial Hospital, New Taipei, Taiwan.
• J Formos Med Assoc. 2021 Sep 1; 120 (9): 1749-1757.

BackgroundTaiwan is a rapidly aging society. The elderly with mild cognitive impairment (MCI) have increased risk of dementia, and this is a population-based report using standard neuropsychological tests and expert consensus diagnosis to assess the MCI prevalence and its associated factors in Taiwan.MethodThe Epidemiology of Mild Cognitive Impairment study in Taiwan (EMCIT) is a community-based, prospective cohort study. Independently-living individuals aged ≧60 years in a rural area (n = 122) and in an urban area (n = 348) of New Taipei City, Taiwan, completed detailed neuropsychological tests at the cohort baseline. Diagnosis of MCI was ascertained through expert consensus based on 2011 NIA-AA criteria.ResultsOf 470 participants recruited between 2017 and 2019 (mean age 71.2 ± 5.4 years), the prevalence of MCI was higher in the rural area than in the urban area (25.1% vs. 10.8%, p < 0.001) after standardized for age, gender, and level of education. Having lower education and having depression symptoms were consistently associated with increased risk of MCI in both urban and rural areas (p < 0.05). Being male and diabetes were additionally associated with MCI prevalence in urban areas.ConclusionIn this community-based prospective cohort study in Taiwan, the prevalence of MCI in the rural community was much higher than that in the urban community. Different strategies may be needed to targeted different types of communities.Copyright © 2021. Published by Elsevier B.V.

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