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Abstract Title:

Associations of mixture of air pollutants with estimated 10-year atherosclerotic cardiovascular disease risk modified by socio-economic status: The Henan Rural Cohort Study.

Abstract Source:

Sci Total Environ. 2021 Jun 18 ;793:148542. Epub 2021 Jun 18. PMID: 34174609

Abstract Author(s):

Ruiying Li, Jian Hou, Runqi Tu, Xiaotian Liu, Tantan Zuo, Xiaokang Dong, Mingming Pan, Shanshan Yin, Kai Hu, Zhenxing Mao, Wenqian Huo, Shanshan Li, Yuming Guo, Gongbo Chen, Chongjian Wang

Article Affiliation:

Ruiying Li

Abstract:

BACKGROUND: Low socio-economic status (SES) and exposure to single-air pollutant relate to increased prevalent atherosclerotic cardiovascular diseases (ASCVD), however, interactive effect between SES and exposure to single- or multiple-air pollutants on high 10-year ASCVD risk remains unclear.

METHODS: A total of 31,162 individuals were derived from the Henan Rural Cohort Study. Concentrations of air pollutants (particulate matter with an aerodynamic diameter≤ 1.0 μm (PM),≤2.5 μm (PM) or≤10 μm (PM), nitrogen dioxide (NO)) were assessed using a spatiotemporal model based on satellites data. Independent and joint associations of SES, single- and multiple- air pollutants with high 10-year ASCVD risk were evaluated using logistic regression models, quantile g-computation and structural equation models. The interactive effects of SES and exposure to single- or multiple air pollutants on high 10-year ASCVD risk were visualized by using Interaction plots.

RESULTS: Exposure to single air pollutant (PM, PM, PMor NO) related to increased high 10-year ASCVD risk among individuals with low education level or personal average monthly income, compared to the ones with high education level or personal average monthly income. Furthermore, similar results of exposure to mixture of air pollutants with high 10-year ASCVD risk were observed. Positive interactive effects between low SES and exposure to high single air pollutant or the mixture of air pollutants on high 10-year ASCVD risk were observed.

CONCLUSION: Positive association of low SES with high 10-year ASCVD risk was amplified by exposure to high levels of single air pollutant or a mixture of air pollutants, implying that individuals with low SES may more susceptible to air pollution-related adverse health effect.

Study Type : Human Study

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