Abstract
Despite the known link between air pollution and cause-specific mortality, its relation to chronic kidney disease (CKD)-associated mortality is understudied. Therefore, we investigated the association between long-term exposure to air pollution and CKD-related mortality in a large multicentre population-based European cohort. Cohort data were linked to local mortality registry data. CKD-death was defined as ICD10 codes N18-N19 or corresponding ICD9 codes. Mean annual exposure at participant's home address was determined with fine spatial resolution exposure models for nitrogen dioxide (NO 2), black carbon (BC), ozone (O 3), particulate matter ≤2.5μm (PM 2.5) and several elemental constituents of PM 2.5. Cox regression models were adjusted for age, sex, cohort, calendar year of recruitment, smoking status, marital status, employment status and neighbourhood mean income. Over a mean follow-up time of 20.4 years, 313 of 289 564 persons died from CKD. Associations were positive for PM 2.5 (hazard ratio (HR) with 95% confidence interval (CI) of 1.31 (1.03-1.66) per 5μg/m 3, BC (1.26 (1.03-1.53) per 0.5×10 - 5/m), NO 2 (1.13 (0.93-1.38) per 10μg/m 3) and inverse for O 3 (0.71 (0.54-0.93) per 10μg/m 3). Results were robust to further covariate adjustment. Exclusion of the largest sub-cohort contributing 226 cases, led to null associations. Among the elemental constituents, Cu, Fe, K, Ni, S and Zn, representing different sources including traffic, biomass and oil burning and secondary pollutants, were associated with CKD-related mortality. In conclusion, our results suggest an association between air pollution from different sources and CKD-related mortality.
Original language | English |
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Article number | 118942 |
Journal | Environmental Research |
Volume | 252 |
Issue number | Pt 3 |
Early online date | 20 Apr 2024 |
DOIs | |
Publication status | Published - 1 Jul 2024 |
Bibliographical note
Publisher Copyright:© 2024 The Authors
Funding
the research described in this article was conducted under contract to the Health Effects Institute (HEI), an organisation jointly funded by the United States Environmental Protection Agency (EPA) (Assistance Award No. R-82811201) and certain motor vehicle and engine manufacturers. The contents of this article do not necessarily reflect the views of HEI, or its sponsors, nor do they necessarily reflect the views and policies of the EPA or motor vehicle and engine manufacturers.
Funders | Funder number |
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U.S. Environmental Protection Agency | R-82811201 |
U.S. Environmental Protection Agency |
Keywords
- Air pollution
- Chronic kidney disease
- Long-term exposure
- Mortality
- PM
- Particulate matter constituents