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Prevalence of dementia in East Asia: a synthetic review of time trends

OBJECTIVE: This study aims to synthesise evidence on time trends of dementia prevalence in East Asian countries including Japan, China, South Korea and Taiwan and assess the impact of the societal changes on future prevalence. METHOD: Relevant reviews and recent nationwide studies in East Asia were...

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Detalles Bibliográficos
Autores principales: Wu, Yu-Tzu, Brayne, Carol, Matthews, Fiona E
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4510821/
https://www.ncbi.nlm.nih.gov/pubmed/25963138
http://dx.doi.org/10.1002/gps.4297
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author Wu, Yu-Tzu
Brayne, Carol
Matthews, Fiona E
author_facet Wu, Yu-Tzu
Brayne, Carol
Matthews, Fiona E
author_sort Wu, Yu-Tzu
collection PubMed
description OBJECTIVE: This study aims to synthesise evidence on time trends of dementia prevalence in East Asian countries including Japan, China, South Korea and Taiwan and assess the impact of the societal changes on future prevalence. METHOD: Relevant reviews and recent nationwide studies in East Asia were identified to investigate changes in prevalence of dementia over time taking into account the potential impact of methodological factors and study designs. RESULTS: The robust evidence that has been interpreted to suggest a substantial increasing trend over time is less compelling once fundamental differences in study methods and populations across individual surveys are considered. In Japan, longitudinal studies in small areas suggest the potential increase of prevalence after 2000. Increasing trends in China, South Korea and Taiwan over the last 20–30 years are based on the literature review without adjustment for methodological differences. Economic development and huge societal changes alongside the rise of non-communicable disease in East Asia could lead to increasing prevalence of dementia in the future once those cohorts with high risk of dementia reached their older age. CONCLUSION: Current evidence is not sufficient to suggest increasing trends of dementia prevalence in East Asia. Longitudinal studies with representative samples and stable methodology are needed to provide fundamental information of the epidemiology of dementia and identify important risk factors in East Asian societies. © 2015 The Authors. International Journal of Geriatric Psychiatry published by John Wiley & Sons Ltd.
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spelling pubmed-45108212015-07-24 Prevalence of dementia in East Asia: a synthetic review of time trends Wu, Yu-Tzu Brayne, Carol Matthews, Fiona E Int J Geriatr Psychiatry Review Articles OBJECTIVE: This study aims to synthesise evidence on time trends of dementia prevalence in East Asian countries including Japan, China, South Korea and Taiwan and assess the impact of the societal changes on future prevalence. METHOD: Relevant reviews and recent nationwide studies in East Asia were identified to investigate changes in prevalence of dementia over time taking into account the potential impact of methodological factors and study designs. RESULTS: The robust evidence that has been interpreted to suggest a substantial increasing trend over time is less compelling once fundamental differences in study methods and populations across individual surveys are considered. In Japan, longitudinal studies in small areas suggest the potential increase of prevalence after 2000. Increasing trends in China, South Korea and Taiwan over the last 20–30 years are based on the literature review without adjustment for methodological differences. Economic development and huge societal changes alongside the rise of non-communicable disease in East Asia could lead to increasing prevalence of dementia in the future once those cohorts with high risk of dementia reached their older age. CONCLUSION: Current evidence is not sufficient to suggest increasing trends of dementia prevalence in East Asia. Longitudinal studies with representative samples and stable methodology are needed to provide fundamental information of the epidemiology of dementia and identify important risk factors in East Asian societies. © 2015 The Authors. International Journal of Geriatric Psychiatry published by John Wiley & Sons Ltd. Blackwell Publishing Ltd 2015-08 2015-05-11 /pmc/articles/PMC4510821/ /pubmed/25963138 http://dx.doi.org/10.1002/gps.4297 Text en © 2015 The Authors. International Journal of Geriatric Psychiatry published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/4.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Review Articles
Wu, Yu-Tzu
Brayne, Carol
Matthews, Fiona E
Prevalence of dementia in East Asia: a synthetic review of time trends
title Prevalence of dementia in East Asia: a synthetic review of time trends
title_full Prevalence of dementia in East Asia: a synthetic review of time trends
title_fullStr Prevalence of dementia in East Asia: a synthetic review of time trends
title_full_unstemmed Prevalence of dementia in East Asia: a synthetic review of time trends
title_short Prevalence of dementia in East Asia: a synthetic review of time trends
title_sort prevalence of dementia in east asia: a synthetic review of time trends
topic Review Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4510821/
https://www.ncbi.nlm.nih.gov/pubmed/25963138
http://dx.doi.org/10.1002/gps.4297
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