Exposure to road traffic and railway noise and associations with blood pressure and self-reported hypertension: a cohort study

Environmental Health

Research

Jørgen Jakobsen¹  Kim Overvad²  Barbara Hoffmann³  Rikke B Nordsborg⁴  Mette Sørensen⁴  Anne Tjønneland⁴  Ole Raaschou-Nielsen⁴  Zorana J Andersen⁴  Martin Hvidberg⁵  Kenneth G Lillelund⁶ 

[1] Danish Environmental Protection Agency, Copenhagen, Denmark;Department of Epidemiology, School of Public Health, Aarhus University, Aarhus, Denmark;Department of Cardiology, Centre for Cardiovascular Research, Aalborg Hospital, Aarhus University Hospital, Aalborg, Denmark;IUF-Leibniz Research Institute for Environmental Medicine and Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany;Institute of Cancer Epidemiology, Danish Cancer Society, Copenhagen, Denmark;National Environmental Research Institute, Aarhus University, Roskilde, Denmark;Rambøll Danmark A/S, Aarhus, Denmark;

关键词: blood pressure;    transport noise;    road traffic;    railway;    epidemiology;    cohort;   

DOI  :  10.1186/1476-069X-10-92

 received in 2011-06-17, accepted in 2011-10-28,  发布年份 2011

来源: Springer

【 摘 要 】

BackgroundEpidemiological studies suggest that long-term exposure to transport noise increases the risk for cardiovascular disorders. The effect of transport noise on blood pressure and hypertension is uncertain.MethodsIn 1993-1997, 57,053 participants aged 50-64 year were enrolled in a population-based cohort study. At enrolment, systolic and diastolic blood pressure was measured. Incident hypertension during a mean follow-up of 5.3 years was assessed by questionnaire. Residential long-term road traffic noise (Lden) was estimated for 1- and 5-year periods preceding enrolment and preceding diagnosis of hypertension. Residential exposure to railway noise was estimated at enrolment. We conducted a cross-sectional analysis of associations between road traffic and railway noise and blood pressure at enrolment with linear regression, adjusting for long-term air pollution, meteorology and potential lifestyle confounders (N = 44,083). Incident self-reported hypertension was analyzed with Cox regression, adjusting for long-term air pollution and potential lifestyle confounders.ResultsWe found a 0.26 mm Hg higher systolic blood pressure (95% confidence intervals (CI): -0.11; 0.63) per 10 dB(A) increase in 1-year mean road traffic noise levels, with stronger associations in men (0.59 mm Hg (CI: 0.13; 1.05) per 10 dB(A)) and older participants (0.65 mm Hg (0.08; 1.22) per 10 dB(A)). Road traffic noise was not associated with diastolic blood pressure or hypertension. Exposure to railway noise above 60 dB was associated with 8% higher risk for hypertension (95% CI: -2%; 19%, P = 0.11).ConclusionsWhile exposure to road traffic noise was associated with systolic blood pressure in subgroups, we were not able to identify associations with hypertension.

【 授权许可】

CC BY   
© Sørensen et al; licensee BioMed Central Ltd. 2011