| Acute effects of urban air pollution on respiratory health of children with and without chronic respiratory symptoms. | |
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MedLine Citation:
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PMID: 10658536 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: To investigate to what extent different components of air pollution are associated with acute respiratory health effects in children with and without chronic respiratory symptoms. METHODS: During three consecutive winters starting in 1992-3, peak expiratory flow (PEF) and respiratory symptoms were registered daily in panels of children of 7-11 years old with and without symptoms, living in urban areas with high traffic intensity in The Netherlands. Simultaneously, panels of children living in non-urban areas were studied. Daily measurements of particles with aerodynamic diameter < 10 microns (PM10), black smoke (BS), sulphate, SO2, and NO2 were performed in both areas. RESULTS: The contrast in particle concentrations (PM10, BS, and sulphate) between urban and non-urban areas was small, but there was more contrast in the concentrations of SO2 and NO2. In children with symptoms from both areas, significant associations were found between PM10, BS, and sulphate concentrations and the prevalence of symptoms of the lower respiratory tract (LRS) and decrements in PEF. Particle concentrations were also associated with use of bronchodilators in the urban areas, but not in the non-urban areas. After stratification by use of medication, stronger associations were found in children who used medication than in children who did not use medication. The magnitude of the estimated effects was in the order of a twofold increase in the use of bronchodilators, a 50% increase in LRS, and an 80% increase in decrements in PEF for a 100 micrograms/m3 increase in the 5 day mean PM10 concentration. In children without symptoms, significant associations were found between concentrations of PM10 and BS and decrements in PEF in both areas, but these associations were smaller than those for children with symptoms. No associations with respiratory symptoms were found. CONCLUSIONS: The results suggest that children with symptoms are more susceptible to the effects of particulate air pollution than children without symptoms, and that use of medication for asthma does not prevent the adverse effects of particulate air pollution in children with symptoms. |
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Authors:
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S van der Zee; G Hoek; H M Boezen; J P Schouten; J H van Wijnen; B Brunekreef |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Occupational and environmental medicine Volume: 56 ISSN: 1351-0711 ISO Abbreviation: Occup Environ Med Publication Date: 1999 Dec |
Date Detail:
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Created Date: 2000-02-22 Completed Date: 2000-02-22 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 9422759 Medline TA: Occup Environ Med Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 802-12 Citation Subset: IM |
Affiliation:
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Environmental and Occupational Health Group, University of Wageningen, The Netherlands. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Air Pollution
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adverse effects* Child Chronic Disease Environmental Monitoring Humans Netherlands / epidemiology Nitrogen Oxides / adverse effects Peak Expiratory Flow Rate Respiration Disorders / chemically induced*, physiopathology Rural Health Seasons Sulfur Oxides / adverse effects Urban Health |
| Chemical | |
Reg. No./Substance:
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0/Nitrogen Oxides; 0/Sulfur Oxides |
| Comments/Corrections | |
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