A multicentre community‐based study of dementia cases and subcases in older people in China—the GMS‐AGECAT prevalence and socio‐economic correlates

Abstract

People in China have a higher prevalence of dementia than previously reported. Its U-shaped relationship with income and the excess subcases prevalence predicates a significant burden of disease, both now and for the future, suggesting preventive strategy for dementia in China.

The assessment of cognitive impairment suspected of dementia in Polish elderly people: results of the population-based PolSenior Study

“…The analysed data was in agreement with other studies (Chen et al 2012;Nunes et al 2010), that presented the greater prevalence of dementia in rural areas (in our study, when based on raw MMSE, there was a significant difference in cognitive impairment frequency according to the place of residence). The distinction results mainly from different levels of education, yet it might be attributed to the fact that in the rural environment there is less access to intellectually stimulating entertainments (e.g.…”

O4–04–02: Prevalence studies of dementia in mainland China, Hong Kong and Taiwan: A systematic review and meta‐analysis

“…There were 25 surveys (32.9%) conducted in North China , 26 (34.2%) in central area and 16 (21.1%) in southern area [63][64][65][66][67][68][69][70][71][72][73][74][75][76][77][78]. The 2 nationwide studies were the 4 Cities Study and the 4 Provinces Study [60,79]. The 4 Cities Study started from 1997-1998 and recruited people aged over 55 years old in 4 main cities across China: Beijing, Xian, Shanghai and Chengdu [79].…”

“…The 4 Cities Study started from 1997-1998 and recruited people aged over 55 years old in 4 main cities across China: Beijing, Xian, Shanghai and Chengdu [79]. The 4 Provinces Study investigated people over 60 years old in Shanghai, Shanxi, Guangdong and Heilongjiang provinces in 2008-2009 [60]. The 6 studies conducted in Taiwan included 3 surveys in southern Taiwan (KaoKaoping area and Kinmen), 2 surveys in northern area (Taipei and Ilan) and 1 nationwide study (4 geographical regions: north, central, south and east) [81][82][83][84][85][86].…”

“…There have been two nationwide studies, the 4 Cities Study and 4 Province Study, which investigated the prevalence of dementia in different places with the same research methods [60,79]. 4 Cities Study reported some variations between different cities and 4 Provinces Study found significantly higher risk of dementia in rural than in urban areas.…”

Prevalence of Dementia-Associated Disability Among Chinese Older Adults: Results from a National Sample Survey

“…2 Prevalence rates of dementia in Chinese older adults range from 1.37% to 8.19%, 2,9e15 and there has been a significant increase in the prevalence of dementia since 1980s. 9 More women are affected by dementia than men, 10,13,14 more rural elders have dementia than their urban counterparts, 16 and the prevalence of dementia is higher among the oldest old. 15 Due to rapid population aging in China 17 and the increase of dementia in developing countries worldwide, 5,18 dementia has become an urgent public health issue in China.…”