Prevalence of dementia and the attributable contributions of modifiable risk factors in China
Hui Chen, Yu-Hui Huang, Xiaozhen Lv, Xin Xu, Yuan Ma, Huali Wang, C. Z. Yuan
Abstract
⇒ Dementia poses substantial social, economic, and family burdens to the worldwide aging population.⇒ China is faced with a huge challenge of dementia, but reported estimates on prevalent dementia among Chinese older adults were inconsistent, varying from 2% to 13% among older adults. WHAT THIS STUDY ADDS⇒ Among 8 546 participants aged 60 or above from the Harmonized Cognitive Assessment Protocol substudy for the China Health and Retirement Longitudinal Study in 2018, the weighted prevalence rate of dementia was 7.1%.⇒ The overall weighted population attributable fraction (PAF) of 12 modifiable risk factors was 60.1%.Less education had the largest PAF (11.3%), followed by physical inactivity (7.6%), hypertension (7.4%), air pollution (6.9%), and hearing loss (6.4%).