Investigating Heterogeneity in the Relationship Between Marital Satisfaction and Cognitive Health by Gender and Across the Cognitive Function Distribution

Overview

Journal Innov Aging

Publisher Oxford University Press

Specialty Geriatrics

Date 2023 Sep 20

PMID 37727598

Authors

Jinho Kim

Keun Young Kwon

Affiliations

Soon will be listed here.

Abstract

Background And Objectives: Marital satisfaction has been established as an essential factor for promoting health and well-being in older adults. However, it is unclear whether marital satisfaction is also associated with cognitive health in this population. This study aimed to investigate the longitudinal association between marital satisfaction and cognitive function, while also exploring variations in this relationship by gender and across the cognitive function distribution.

Research Design And Methods: This study used 6 waves of the Korean Longitudinal Study of Ageing (KLoSA) and employed gender-stratified unconditional quantile regression (UQR) models with fixed effects (FE) to estimate the association between marital satisfaction and cognitive function across different quantiles of the cognitive function distribution. FE models controlled for unobserved individual-level confounders such as genetics, cognitive and noncognitive skills, and early childhood social and cultural background.

Results: The results of this study revealed that marital satisfaction was positively associated with cognitive function ( = 0.305), and this association was stronger in older men than in older women ( = 0.392 for older men vs = 0.181 for older women). The UQR-FE models suggested that stronger association between marital satisfaction and cognitive function was observed among older men with lower cognitive function ( = 0.817 for 10th percentile vs = 0.118 for 90th percentile). Among older women, no clear patterns of heterogeneity were found across the cognitive function distribution.

Discussion And Implications: The findings of this study highlight a significant degree of heterogeneity in the relationship between marital satisfaction and cognitive function among older men, with stronger associations observed in the lower percentiles of the cognitive function distribution. Interventions aimed at improving marital quality could be an effective strategy for promoting cognitive health in older adults, with an approach tailored to the individual's characteristics.

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