Prevalence and influencing factors of mild cognitive impairment in elderly population in urban community of Tianjin

Abstract

Objective To investigate the prevalence of mild cognitive impairment (MCI) and related influencing factors among elderly population in urban community of Tianjin. Methods The cross⁃sectional survey and cluster sampling method were used for prevalence survey. Total 3200 elderly people aged≥60 years old who underwent routine physical examination from four communities in Heping District of Tianjin from September 2019 to May 2020 were investigated by questionnaire survey and cognitive screening test, finally 3194 elderly people were recruited. Univariate and multivariate Logistic regression analyses were conducted to explore related influencing factors of MCI. Results Total 340 subjects were diagnosed with MCI among 3194 elderly subjects, with a prevalence rate of 10.64%. Logistic regression analysis showed 70-79 years old (OR=1.670, 95%CI:1.275-2.187; P=0.000), ≥80 years old (OR=3.168, 95%CI:2.264-4.433; P=0.000) and body mass index (BMI) ＜18.50 kg/m2 (OR=3.602, 95%CI:1.899-6.833; P=0.000) were independent risk factors of MCI; and primary school (OR=0.342, 95%CI:0.148-0.790; P=0.012), junior high school (OR=0.150, 95%CI:0.066-0.337; P=0.000), senior high school (OR=0.131, 95%CI:0.058-0.294; P=0.000), college and above (OR=0.068, 95%CI:0.030-0.155; P=0.000) and having exercise habits (OR=0.786, 95%CI:0.621-0.995; P=0.045) were protective factors. Conclusions The prevalence of MCI among elder people≥60 years old is 10.64% in urban community of Tianjin, and mainly influenced by age, body weight, educational level and exercise habits.

Keywords

• cognition disorders
• risk factors
• logistic models
• tianjin