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The relationship between outdoor air quality and respiratory symptoms in young children

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The aim of this study was to investigate the relationship between air pollution and respiratory symptoms in young children. A total of 263 children at high risk of developing asthma or atopy were recruited antenatally and all respiratory symptoms experienced by the children were recorded by their parents for five years. Daily pollutant concentrations and meteorological data (ambient temperature and humidity) were collected from network monitoring sites. Logistic regression models investigating relationships between individual air pollutants and respiratory symptoms showed significant associations between Ozone (O3) (1 h and 8 h) concentrations and raised body temperature (lag 0); Carbon monoxide (CO) (8 h) and wheeze/rattle and runny/blocked nose (lag 5 and additive exposure over 5 days); Nitrogen dioxide (NO2) (24 h) concentrations and cough (lag 0 and additive exposure over 5 days) and PM2.5 and visibility (BSP) (1 h) with cough (lag 0). These associations were observed even though air pollutant concentrations were below national standards throughout the study period.
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Keywords: Air pollution; body temperature; children; cough; respiratory illness; wheeze

Document Type: Research Article

Affiliations: 1: Centre for Ecosystem Management, Edith Cowan University, Joondalup, Australia 2: School of Population Health, University of Western Australia, Nedlands, Australia 3: Telethon Institute for Child Health Research and Centre for Child Health Research, Subiaco, Australia 4: School of Paediatrics and Child Health, University of Western Australia, Nedlands, Australia 5: Department of Environment, Perth, Australia 6: Faculty of Medicine and Dentistry, University of Western Australia, Nedlands, Western Australia, Australia

Publication date: October 1, 2007

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