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. 2024 May 2:12:1378979.
doi: 10.3389/fpubh.2024.1378979. eCollection 2024.

Instrumental activities of daily living function and cognitive status among Chinese older adults: a serial multiple mediation model

Sijie Huang  1 , Wenjuan Zhong  1 , Qingzhou Cheng  1 , Yuxi Shuai  1 , Jiahui Zhu  1 , Jiawei Diao  1
Affiliations

Instrumental activities of daily living function and cognitive status among Chinese older adults: a serial multiple mediation model

Sijie Huang et al. Front Public Health. .

Abstract

Objective: This study aimed to develop and validate a serial multiple mediation model to investigate the association between instrumental activities of daily living (IADL) function and cognitive status among older adults while exploring the underlying mechanisms.

Methods: This cross-sectional study involved 3,665 individuals aged 60 years and older who participated in the China Health and Retirement Longitudinal Survey (CHARLS). A serial multiple mediation model was utilized to explore the direct and indirect relationship between IADL function and cognitive status and whether sleep duration, social engagement, and depressive symptoms mediated this relationship.

Results: Decreased IADL function was associated with worse cognitive status [effect = -0.620, 95% CI: (-0.692, -0.540)]. Sleep duration, social participation (SP), and depressive symptoms all acted as mediators in the relationship between IADL function and cognitive status.

Conclusion: This study found both direct and indirect associations between IADL function and cognitive status, providing new insights into the effective prevention and intervention of cognitive decline among older adults.

Keywords: IADL; cognitive status; depressive symptoms; sleep duration; social participation.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
The serial mediation model. Solid lines indicate significant paths. Dashed lines indicate non-significant paths (***p < 0.001).
See this image and copyright information in PMC

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