In the three Italian centres involved in the European Community Respiratory Health Survey (ECRHS), prevalence of asthma-like symptoms was as assessed through a mailback questionnaire.
Since the nonresponse rate was not negligible, ranging 10-18%, we investigated whether nonresponse bias affected the results and, if so, whether the bias could be eliminated from the final estimates of prevalence.
A screening questionnaire was sent by mail to 7,000 randomly selected subjects 20-44 yrs of age, and nonresponders were contacted again by phone.
Mots-clés Pascal : Asthme, Questionnaire, Symptomatologie, Calcul, Prévalence, Italie, Europe, Epidémiologie, Homme, Biais méthodologique, Appareil respiratoire pathologie, Non réponse
Mots-clés Pascal anglais : Asthma, Questionnaire, Symptomatology, Calculation, Prevalence, Italy, Europe, Epidemiology, Human, Methodological bias, Respiratory disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0180615
Code Inist : 002B11B. Création : 09/06/1995.