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Arterial Blood Pressure and Long-Term Exposure to Traffic-Related Air Pollution: An Analysis in the European Study of Cohorts for Air Pollution Effects (ESCAPE)
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2014 (English)In: Journal of Environmental Health Perspectives, ISSN 0091-6765, E-ISSN 1552-9924, Vol. 122, no 9, 896-905 p.Article, review/survey (Refereed) Published
Abstract [en]

BACKGROUND: Long-term exposure to air pollution has been hypothesized to elevate arterial blood pressure (BP). The existing evidence is scarce and country specific. OBJECTIVES: We investigated the cross-sectional association of long-term traffic-related air pollution with BP and prevalent hyper-tension in European populations. METHODS: We analyzed 15 population-based cohorts, participating in the European Study of Cohorts for Air Pollution Effects (ESCAPE). We modeled residential exposure to particulate matter and nitrogen oxides with land use regression using a uniform protocol. We assessed traffic exposure with traffic indicator variables. We analyzed systolic and diastolic BP in participants medicated and nonmedicated with BP-lowering medication (BPLM) separately, adjusting for personal and area-level risk factors and environmental noise. Prevalent hyper-tension was defined as >= 140 mmHg systolic BP, or >= 90 mmHg diastolic BP, or intake of BPLM. We combined cohort-specific results using random-effects meta-analysis. RESULTS: In the main meta-analysis of 113,926 participants, traffic load on major roads within 100 m of the residence was associated with increased systolic and diastolic BP in nonmedicated participants [0.35 mmHg (95% CI: 0.02, 0.68) and 0.22 mmHg (95% CI: 0.04, 0.40) per 4,000,000 vehicles x m/day, respectively]. The estimated odds ratio (OR) for prevalent hyper-tension was 1.05 (95% CI: 0.99, 1.11) per 4,000,000 vehicles x m/day. Modeled air pollutants and BP were not clearly associated. CONCLUSIONS: In this first comprehensive meta-analysis of European population-based cohorts, we observed a weak positive association of high residential traffic exposure with BP in nonmedicated participants, and an elevated OR for prevalent hyper-tension. The relationship of modeled air pollutants with BP was inconsistent.

Place, publisher, year, edition, pages
2014. Vol. 122, no 9, 896-905 p.
National Category
Environmental Health and Occupational Health Earth and Related Environmental Sciences
URN: urn:nbn:se:su:diva-108540DOI: 10.1289/ehp.1307725ISI: 000341714600015OAI: diva2:766940


Available from: 2014-11-28 Created: 2014-10-29 Last updated: 2014-11-28Bibliographically approved

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Caracciolo, Barbara
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Aging Research Center (ARC), (together with KI)
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