The influence of neighborhood traffic density on the respiratory health of elementary schoolchildren

被引:25
|
作者
Cakmak, Sabit [5 ]
Mahmud, Mamun [6 ]
Grgicak-Mannion, Alice [7 ]
Dales, Robert E. [1 ,2 ,3 ,4 ]
机构
[1] Ottawa Hosp, Ottawa Hosp Res Inst, Ottawa, ON K1H 8L6, Canada
[2] Univ Ottawa, Dept Med, Ottawa, ON K1H 8L6, Canada
[3] Univ Ottawa, Dept Epidemiol, Ottawa, ON K1H 8L6, Canada
[4] Hlth Canada, Ottawa, ON K1H 8L6, Canada
[5] Hlth Canada, Environm Hlth Sci & Res Bur, Populat Studies Div, Air Hlth Effects Res Sect, Ottawa, ON K1A 0K9, Canada
[6] Hlth Canada, Environm Hlth Sci & Res Bur, Populat Studies Div, Biostat Sect, Ottawa, ON K1A 0K9, Canada
[7] Univ Windsor, Great Lakes Inst Environm Res, Windsor, ON N9B 3P4, Canada
关键词
Traffic; Air pollution; Environment; Exhaled nitric oxide; Respiratory system; Spirometry; EXHALED NITRIC-OXIDE; AIR-POLLUTION; SYMPTOMS; ASTHMA; DISTANCE; ROADWAYS; CHILDREN;
D O I
10.1016/j.envint.2011.10.006
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Background: Several studies have found that living near major roadways is associated with an increase in respiratory illness but few studies have measured the volume and type of traffic. Objective: We investigated the relation between traffic volume and respiratory health of 2328 children 9 to 11 years old in the city of Windsor, Canada. Methods: We identified the roadways within a 200 meter radius of the child's neighborhood using the latitude and longitude of the residential postal code. Traffic exposure was defined as the sum of the annual volume of vehicles on all of these roadways. Volume was calculated using sensors to detect passing vehicles (simple traffic counts), and by counts and direction of traffic at intersections (turning movement counts). Ventilatory lung function was measured by spirometry and airway inflammation by exhaled nitric oxide (eNO). Results: The odds ratio between an interquartile increase in truck turning movement counts and chest congestion was 120 (1.06-1.35). The percentage of predicted FVC declined 0.68%, (95% CI 1.32, 0.03) for an interquartile increase in simple traffic counts (33,787 vehicles daily). Among those with self-reported asthma, effect sizes were larger. Percentage predicted FEV1 declined 1.84% (95% Cl 0.07, 3.61) associated with an interquartile range increase in turning movement counts. No statistically significant change was detected between traffic measures and exhaled nitric oxide. Conclusions: Our findings provide further support for the hypothesis that neighborhood exposure to traffic-related air pollution increases respiratory symptoms and reduces ventilatory function in children, especially those with self-reported asthma. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:128 / 132
页数:5
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