Development of prevalence and determinants of asthma, COPD and allergies among adults in Flanders; a follow-up study of the ECRHS

The main objectives are: a follow-up onderozek perform at as many people who participated in the second phase of the ECHR-I. -the study of a new sample to examine the evolution of the prevalence in this age group -the prevalence, incidence and possible. remission of respiratory symptoms and allergies -the evolution of symptoms, atopy, lung function and bronchial hyperresponsiveness and the effect of treatment on prognosis. ...