Luchtwegaandoeningen bij kinderen in de omgeving van de luchthaven Schiphol

The aim of this study is to assess: 1) the differences in lung function and in prevalences of respiratory symptoms between school children living in different towns in the Schiphol area; 2) the differences in air pollution levels caused by air and road traffic, as measured inside and outside primary schools (measurements outside were taken at school locations either close to Schiphol Airport or close to a busy roadway and compared to school locations at longer distances) and 3) the association between exposure to air pollution caused by air and road traffic and respiratory health. The study was performed among 2500 primary school children, aged 7-12, living in the Schiphol area. The health survey consisted of: a questionnaire on respiratory symptoms and allergy; a lung function test, blood test and a skin-prick test. Air pollution models were used to assess the exposure levels and air pollution measurements. The results show differences between towns where respiratory symptoms are prevalent, decreased lung function and the quantity of antibodies (IgE) in the blood. However, the prevalence was not related to the distance from Schiphol airport. The average prevalence in the Schiphol area was higher than in a 'control' population that was neither situated in the Schiphol area, nor close to a busy highway. In and near primary schools situated close to busy highways, higher concentrations of air pollution were found than in schools situated farther away from a roadway. Levels of NO2, 'soot' and benzene decreased with increasing distance to Schiphol Airport. No association was found between the different exposure measures and the prevalence of respiratory symptoms, a decreased lung function or an increased level of IgE in the blood. Air pollution around Schiphol was concluded not be associated with the health endpoints observed in the participating children