Prevalence of asthma, local risk factors and agreement between written and video questionnaires among Turkish adolescents

Abstract

Background: There is currently no standard tool for the measurement of asthma in epidemiological studies. The objectives of this study were to determine the prevalence of asthma, to describe the potential local risk factors, and to assess the agreement between written and Video questionnaires in 13- to 14-year-old schoolchildren.