“…There have been several epidemiological surveys of dementia in Chinese populations conducted in Shanghai (1), Beijing (2), and Taiwan (3, 4) where the incidence and prevalence of dementia and Alzheimer's disease (AD) have been ascertained. Comparing the studies on the prevalence of dementia in Chinese populations age 65 and above, fairly low rates were reported from Taiwan (1.7–3.7%) (5, 6) China (1.8%) (2), and Singapore (1.8–2.5%) (7, 8). In addition, the prevalence of advanced dementia for persons 65 years and older was lower (0.46–1.86%) in China than in western countries (1.3–6.2%) (1).…”