MM Pizzichini|Donna Rennie|A. Senthilselvan|Brett Taylor|Brian F. Habbick|Malcolm R. Sears
Limited agreement between written and video asthma symptom questionnaires
University of Saskatchewan|McMaster University|University of Saskatchewan|McMaster University|University of Saskatchewan|McMaster University|University of Saskatchewan|McMaster University|University of Saskatchewan|McMaster University|University of Saskatchewan|McMaster University
prevalence asthma remains difficult determine precision absolute gold standard diagnosis recently developed video questionnaire epidemiological studies less reliance understanding written questions provides another tool determining prevalence severity asthma report international study asthma allergies childhood isaac examines agreement isaac video questionnaires respiratory symptoms reported asthma december 1993 april 1995 4952 children aged 1314 years two canadian communities completed sequentially isaac written video questionnaires school agreement responses two questionnaires reported wheeze ever current wheeze wheeze exercise nocturnal wheeze latter three questions relating symptoms last 12 months combination latter three questions examined full sample reporting diagnosed asthma using concordance kappa coefficients measures agreement prevalences wheeze ever current wheeze wheeze exercise nocturnal wheeze significantly lower based responses video questionnaire compared written questionnaire regions full sample labeled asthma although concordance video written questionnaires always exceeded 60 often exceeded 70 related questions agreement measured kappa statistic question fair moderate kappa 022051 conclude video questionnaire yields lower reported prevalence rates asthma symptoms limited agreement responses two questionnaires explained issues language culture literacy