Associations of relative deprivation with self-rated health and health-related quality of life: mediating role of subjective social status.

Relative deprivation has been linked to various adverse health outcomes. However, the potential mediating factors in the association between relative deprivation and health outcomes remain unclear. This study aimed to (1) examine the association between relative deprivation and self-rated health and health-related quality of life among the working-age population in Taiwan and (2) investigate the mediating effect of subjective social status. Cross-sectional study using nationally representative data. Data were obtained from the 2022 Taiwan Social Change Survey conducted from September 2021 to April 2022. We analyzed 1108 participants aged 25-64 years. Relative deprivation was measured using the Yitzhaki Index based on individual monthly income from all sources. Health-related quality of life was assessed using the 12-item Short Form Health Survey. After adjusting for all covariates and absolute income, least-squares regression models indicated a negative association between the Yitzhaki Index and self-rated health, as well as the physical and mental components of health-related quality of life. Furthermore, subjective social status partially mediates the association between relative income deprivation and poorer self-rated health and health-related quality of life. The findings support the psychosocial effect of the relative deprivation measure, emphasizing the importance of addressing relative deprivation to improve health-related quality of life among the working-age population.

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