[The creation of an indicator for the health effect of air pollutants].

The department of social and preventive medicine of the University of Basle is conducting an epidemiologic study on the health effect of air pollution on preschool children. Nitrogen dioxide in childrens' immediate surrounding measured with personal samplers is used as reference substance for air pollution. Meteorologic and Data on air pollution of all permanent air quality control stations are included in the analysis. Health data are collected by means of a diary in which parents record daily respiratory symptoms of their child. Physicians in pediatric services record daily attendance of children with respiratory diseases.