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Long-term effects of air pollution on ankle-brachial index.
Environ. Int. 118, 17-25 (2018)
Background: Ankle-brachial index (ABI) has been linked to the risk of cardiovascular events. However, the association between long-term exposure to air pollution and abnormal ABI has not been fully investigated.Methods: This cross-sectional study involved 4544 participants from the KORA Study (2004-2008) in the region of Augsburg, Germany. Participants' residential annual mean concentrations of particulate matter (PM) and nitrogen dioxide (NO2) were predicted with land-use regression models, and the traffic information was collected from geographic information systems. We applied multinomial logistic regression models to assess the effects of air pollution on the prevalence of low and high ABI, and quantile regression models to explore the non-monotonic relationship between air pollution and ABI. We also examined effect modification by individual characteristics.Results: Long-term exposure to PM with an aerodynamic diameter <= 10 mu m (PM10) and <= 2.5 mu m (PM2.5) was significantly associated with a higher prevalence of low ABI, with the respective odds ratios (ORs) of 1.82 (95% CI: 1.11-2.97) and 1.59 (95% CI: 1.01-2.51) for a 5th to 95th percentile increment in pollutants. Positive associations with the prevalence of high ABI were observed for PM (e.g., PM10: OR = 1.63, 95% CI: 1.07-2.50) and NO2 (OR = 1.84, 95% CI: 1.15-2.94). Quantile regression analyses revealed similar non-monotonic results. The effects of air pollution on having abnormal ABI were stronger in physically inactive, hypertensive, or nondiabetic participants.Conclusions: Long-term exposure to PM and NO2 was associated with a higher prevalence of both low and high ABI, indicating the adverse effects of air pollution on atherosclerosis and arterial stiffness in the lower extremities.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Abi ; Atherosclerosis ; Stiffness ; Particulate Matter ; Nitrogen Dioxide ; Traffic-related Air Pollution; Peripheral Arterial-disease; Use Regression-models; Heinz Nixdorf Recall; Subclinical Atherosclerosis; Cardiovascular-disease; Physical-activity; Particulate Matter; Systemic Inflammation; Socioeconomic-status; Diabetes-mellitus
ISSN (print) / ISBN
0160-4120
e-ISSN
1873-6750
Journal
Environment International
Quellenangaben
Volume: 118,
Pages: 17-25
Publisher
Elsevier
Publishing Place
The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1gb, England
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Epidemiology II (EPI2)