Analysis of Factors Associated with Subjective Mild Cognitive Impairment (MCI) among Older Adults Resident in the Community

Abstract

This study explored the associated factors of mild cognitive impairment (MCI) in older adults, focusing on personal characteristics and health promotion activities. The research design of this study was a non-experimental, cross-sectional design. This study used secondary data from the 2019 community health survey conducted by the Korea Disease Control and Prevention Agency (KDCA). In this study, 20,041 older adults with subjective MCI and 52,587 healthy older adults—a total of 72,628 subjects—were analyzed as the final subjects in this study. The data were analyzed by using descriptive statistics, a chi-square test, an independent t-test, and logistic regression. The results indicate that the probability of experiencing subjective MCI significantly decreased with an increase in monthly income (odds ratio (OR) = 1.71, 95% confidence interval (CI) = 1.19–2.46); increased with an increase in depressive symptoms (odds ratio (OR) = 1.09, 95% confidence interval (CI) = 1.04–1.15); and decreased with an increase in the quality of life level (OR = 0.90, 95% CI = 0.82–0.99). Through the results of this study, several factors related to MCI in older adults were identified. If these related factors are properly managed, the possibility of MCI in older adults may be reduced. Therefore, MCI in older adults should be addressed as a preventable disease rather than a natural aging process.

Cognitive Impairment and Its Associated Determinants Among the Elderly Population of Telangana, India: An Analytical Prevalence Study

“…Living with a spouse was found to be a protective factor against CI in our study, which agreed with the findings of other studies [ 15 , 18 , 20 , 23 , 25 , 26 , 31 ]. Being alone in old age can be difficult, considering the occurrence of degenerative physical and psychological changes.…”

“…Illiteracy and depression were positively associated with higher forms of CI, whereas living in urban areas, living with spouses, and not consuming alcohol were found to be negatively associated with higher forms of CI. Illiteracy has been reported as an important risk factor associated with CI in studies conducted in multiple settings across the world [15][16][17]20,21,24,25]. The plausibility of illiteracy as a risk factor for CI can be explained by the fact that education is an important aspect of cognitive functioning.…”

Prospective observational studies on nutrition intake and the incidence of cognitive impairment in middle-aged and older adults: A protocol for systematic review and meta-analysis

“…Mild cognitive impairment is a transitional state between typical cognitive aging and early dementia, and is considered to be the preclinical stage of dementia [ 2 ]. As a result, the number of individuals with cognitive impairment who have not yet progressed to dementia is expected to be even higher [ 3 ]. One study predicted the global prevalence of MCI among community dwellers is over 15% [ 4 ].…”