The Prevalence of Mild Cognitive Impairment in Elders in Chongqing, China

Mild cognitive impairment (MCI) is a window to detect dementia, and to screen MCI, Montreal Cognitive Assessment (MoCA) is commonly used. This work investigated the prevalence of MCI in Chongqing elderlies by using MoCA as a tool. One hundred fourteen valid data from older adults ( 55 years, 51.75% males) were recruited for this research. Twelve demographic information were collected, and each participant did one of the two versions of MoCA tests (Beijing 7.1, and the optimized version). They were developed based on the Beijing 7.1 version, and four test sections were optimized to adapt to the native speaking and cultural background. Five risky demographic factors were found. The incidence of MCI detected by the optimized MoCA version was lowered to 83.3% compared to 94.4% in the original version, and the naming section was significantly improved. The significant decrease in the overall prevalence indicates that the optimization of the MoCA has, to some extent, made it more suitable for Chongqing elders. Accordingly, we suggest further professional and detailed improvements to MoCA.