The mediating effect of sleep quality on solid cooking fuel use and psychological distress among rural older adults: evidence from Shandong, China

Sep 10, 2024BMC geriatrics

How Sleep Quality Links Using Solid Cooking Fuel to Mental Stress in Rural Older Adults in Shandong, China

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Abstract

use is associated with among older adults in rural Shandong, China (OR = 1.38).

Psychological distress is linked to exposure to indoor air pollution from solid cooking fuel.
may mediate the relationship between solid cooking fuel use and psychological distress.
The mediation effect of sleep quality accounts for 16.18% of the overall association.
Logistic regression analysis indicates a significant positive relationship between solid cooking fuel use and psychological distress (95% CI: 1.12, 1.70).

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BACKGROUND: Exposure to indoor air pollution from use may increase mental disorders risk through pathways such as oroxidative stress, neuroinflammation, or cerebrovascular damage. However, few studies have explored the underlying mechanism between solid cooking fuel use and . The present study aims to investigate the mediating role of on the relationship between solid cooking fuel use and psychological distress among older adults in rural Shandong, China.

METHODS: This study used the cross-sectional data from the second follow-up survey of the Shandong Rural Elderly Health Cohort (SREHC). A total of 3,240 rural older adults were included in the analysis. Logistic regression and the Karlson, Holm, and Breen (KHB) mediation analyses were performed to investigate the relationship between solid cooking fuel use and psychological distress, as well as the mediating role of sleep quality in this association.

RESULTS: This study found that solid cooking fuel use was significantly and positively associated with psychological distress among older adults in rural Shandong, China (OR = 1.38, 95% CI: 1.12,1.70). Mediation analysis revealed that sleep quality mediated the association between solid cooking fuel use and psychological distress among older adults (β = 0.06, P = 0.011). The mediation effect accounted for 16.18% of the total effect.

CONCLUSIONS: Our study showed that solid cooking fuel use was associated with psychological distress among rural older adults, and sleep quality mediated this association. Interventions should focus on addressing cooking fuel types and poor sleep quality to reduce psychological distress. In the future, more aggressive environmental protection policies would be needed to lessen the adverse effects of indoor air pollution on the health of older adults in rural China.

Key numbers

1.38

Increased Risk of

Odds ratio comparing solid fuel users to clean fuel users

16.18%

Mediation Effect of

Percentage of total effect accounted for by

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The mediating effect of sleep quality on solid cooking fuel use and psychological distress among rural older adults: evidence from Shandong, China

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