Estimating mechanisms linking relative income to self-rated health by multilevel modeling: the moderating role of healthcare access and quality index

Abstract Income-health gradients vary in societies with diverse cultures and healthcare access levels, and generalized trust in unknown resources of health services may play a crucial role in these gradients. Multilevel models using a sample of 152,501 respondents from 89 societies are conducted to...

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Bibliographic Details
Main Authors: Jiansong Zheng, Tao Zhang, Xi Wang
Format: Article
Language:English
Published: BMC 2025-05-01
Series:BMC Public Health
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Online Access:https://doi.org/10.1186/s12889-025-22783-4
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Summary:Abstract Income-health gradients vary in societies with diverse cultures and healthcare access levels, and generalized trust in unknown resources of health services may play a crucial role in these gradients. Multilevel models using a sample of 152,501 respondents from 89 societies are conducted to investigate the mediation effect of generalized trust in the correlation between relative income and self-rated health globally, and the moderating role of healthcare access in the association between relative income and self-rated health. Results show that individuals’ relative income significantly and positively predicts their generalized trust, which in turn significantly and positively predicts their self-rated health. In countries and regions with higher levels of healthcare access and quality, a higher level of relative income is positively correlated with increased self-rated health. This study theoretically contributes to the literature on income-health relationships by capturing medical resource access and individual characteristics. Specific policy recommendations include fostering generalized trust, improving healthcare education, and expanding telemedicine.
ISSN:1471-2458