AI Article Synopsis
- - Cognitive decline in middle-aged and older adults is strongly linked to sleep quality, with significant relationships found across various countries, highlighting the need for targeted interventions.
- - Data from over 79,000 adults revealed that executive function is the most affected cognitive domain by sleep quality, and vulnerabilities vary based on sex, marital status, education, and chronic disease presence.
- - To address these disparities, the study calls for specific strategies such as promoting social activities for singles, evaluating hormone replacement therapy for women, and enhancing educational opportunities for older adults.
Article Abstract
Background: Cognitive decline, a heavy burden on middle-aged and older adults as global aging is aggravated, was found to be associated with sleep quality. However, the country-between heterogeneity of the association prevented us from quantifying underlying relationship and identifying potential effect modifiers for vulnerable populations and targeted interventions.
Methods: We collected data from 79,922 eligible adults in five nationwide cohorts, examined the respective relationships between cognitive function and sleep quality, synthesized underlying average relationships by meta-analysis, and explored effect modifiers by meta-regressions. Additionally, we conducted subgroup and interaction analyses to identify vulnerable populations and to determine their disparities in vulnerability.
Results: Although country-between disparities exist, cognitive function is robustly associated with sleep quality in middle-aged and older adults worldwide, with an effect (β) of 0.015 [0.003, 0.027]. Executive function is the subdomain most relevant to sleep quality. Disparities in the effects of sleep quality on subdomains exist in populations with different sexes (orientation: β/β = 1.615, P = 0.020), marital statuses (orientation: β/β = 2.074, P < 0.001), education levels (orientation:β/β = 2.074, P < 0.001) and chronic disease statuses (memory: β/β = 1.560, P = 0.005).
Conclusions: Cognitive function decreases with worsening sleep quality in middle-aged and older adults. Vulnerability to poor sleep generally persists in singles, females, the uneducated and people with chronic diseases. To minimize disparities and achieve health equity, we advocate for targeted interventions, i.e., encouraging socialization in singles, confirming effectiveness of hormone replacement therapy in females, employing compulsory education in middle-aged and older adults.
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| http://dx.doi.org/10.1016/j.archger.2024.105585 | DOI Listing |
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