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School air quality related to dry cough, rhinitis and nasal patency in children
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Occupational and Environmental Medicine.
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2010 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 35, no 4, 742-749 p.Article in journal (Refereed) Published
Abstract [en]

Controls for indoor air quality (IAQ) in schools are not usually performed throughout Europe. The aim of this study was to assess the effects of IAQ on respiratory health of schoolchildren living in Norway, Sweden, Denmark, France and Italy. In the cross-sectional European Union-funded HESE (Health Effects of School Environment) Study, particulate matter with a 50% cut-off aerodynamic diameter of 10 mu m (PM10) and CO2 levels in a day of normal activity (full classroom) were related to wheezing, dry cough at night and rhinitis in 654 children (10 yrs) and to acoustic rhinometry in 193 children. Schoolchildren exposed to PM10 >50 mu g.m(-3) and CO2 >1,000 ppm (standards for good IAQ) were 78% and 66%, respectively. All disorders were more prevalent in children from poorly ventilated classrooms. Schoolchildren exposed to CO2 levels >1,000 ppm showed a significantly higher risk for dry cough (OR 2.99, 95% CI 1.65-5.44) and rhinitis (OR 2.07, 95% CI 1.14-3.73). By two-level (child, classroom) hierarchical analyses, CO2 was significantly associated with dry cough (OR 1.06, 95% CI 1.00-1.13 per 100 ppm increment) and rhinitis (OR 1.06, 95% CI 1.00-1.11). Nasal patency was significantly lower in schoolchildren exposed to PM10 >50 mu g.m(-3) than in those exposed to lower levels. A poor IAQ is frequent in European classrooms; it is related to respiratory disturbances and affects nasal patency.

Place, publisher, year, edition, pages
2010. Vol. 35, no 4, 742-749 p.
Keyword [en]
Carbon dioxide, indoor air pollution, particles, respiratory, rhinometry, schoolchildren
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-137749DOI: 10.1183/09031936.00016309ISI: 000277334600009OAI: oai:DiVA.org:uu-137749DiVA: diva2:378856
Available from: 2010-12-16 Created: 2010-12-15 Last updated: 2010-12-16Bibliographically approved

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