Key result
Compared to older adults with high socioeconomic status and high diet diversity, those with low socioeconomic status and low diet diversity had significantly higher odds of worse health-related quality of life (OR 1.65).
Why the study?
The combined association of socioeconomic status and diet diversity with health-related quality of life, and whether diet diversity mediates this relationship, was unknown in Chinese older adults.
Does diet diversity mediate the relationship between socioeconomic status and health-related quality of life in Chinese older adults?
Cross-Sectional (n=3,250)
Does diet diversity mediate the relationship between socioeconomic status and health-related quality of life in Chinese older adults?
Diet diversity partially mediates the positive association between socioeconomic status and health-related quality of life in Chinese older adults, suggesting that dietary interventions could help mitigate health inequities.
Answers are grounded in this paper and cite their sources.
Low SES with low diet diversity was associated with worse HRQoL; leaves open whether boosting diet diversity mitigates inequities in Chinese older adults.
Objectives The study aimed at examining the combined association of socioeconomic status (SES) and diet diversity (DD) with health-related quality of life (HRQoL) and exploring whether DD played a mediating role in the relationship between varied SES and HRQoL among Chinese older persons. Method A multi-stage random sampling method was conducted in Shanxi Province of China, with 3,250 older adults participating in this cross-sectional survey. SES was divided into groups by quartiles and DD by means, and these variable groups were combined in pairs to generate a total of eight combinations. The PROCESS macro developed by Hayes was employed for the simple mediation analysis. Results Compared with the reference group (those with both high SES and high DD), older adults who were classified to have lower SES or DD had elevated odds of having worse HRQoL: low SES/ low DD ( OR = 1.65, 95% CI 1.41–2.92); low SES/ high DD ( OR = 1.45, 95% CI 1.17–1.80); middle low SES/ low DD ( OR = 1.43, 95% CI 1.24–1.65); middle low SES/ high DD ( OR = 1.23, 95% CI 1.03–1.47); upper high SES/ low DD ( OR = 1.41, 95% CI 1.21–1.65); and high SES/ low DD ( OR = 1.30, 95%CI 1.10–1.53). The mediation analysis revealed that DD mediated the relationship between SES and HRQoL ( B =0.011, 95% CI 0.008–0.013), with its indirect effects accounting for 39.29% of the total effects. Conclusions These findings highlighted the role of DD as a mediator of the relationship between SES and HRQoL. As DD could be protective, modifiable, and easy for older adults to understand and implement, village clinics and community health stations should work collaboratively to design proper DD intervention measures for better HRQoL.
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Zhang et al. (2023) conducted a cross-sectional in Health-related quality of life (n=3,250). Low socioeconomic status and low diet diversity vs. High socioeconomic status and high diet diversity was evaluated on Worse health-related quality of life (higher EQ-5D disutility score) (OR 1.65, 95% CI 1.41-1.92, p=<0.001). Compared to older adults with high socioeconomic status and high diet diversity, those with low socioeconomic status and low diet diversity had significantly higher odds of worse health-related quality of life (OR 1.65).
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