Analysis of cognitive function status and its influencing factors among middle-aged and elderly people in China

Objective To understand the status of cognitive function and its influencing factors in middle-aged and elderly people in China. Methods Based on the data of China Health and Retirement Longitudinal Study in 2015-2016,a multi-factor regression method was used to analyze the cognitive function status and influencing factors of 12 893 middle-aged and elderly people( over 45 years old). Results Factors such as age,gender,education level and living area were significantly associated with cognitive function. In addition,body mass index growth,smoking,midday sleep,too long or too short nighttime sleep,heavy physical activity,lack of instrumental activities of daily living,and depression were all risk factors for cognitive function in middle-aged and elderly people. Conclusion The cognitive function of the middle-aged and elderly people was affected by many factors,such as sociodemographic characteristics,lifestyle,physical function,disease and psychology. The intervention factors should be targeted to effectively promote the cognitive health of middle-aged and elderly people,thus improve their quality of life.