Interviews and Standardized Questionnaires
All children and their parents were interviewed according to a modified version of the standardized questionnaire used in the Environmental and Childhood Asthma study 27. The questionnaire included demographic data; family history of allergy and asthma; personal history of asthma, rhinitis, and other allergic manifestations, and medications and health care usage. Subjects were also administered the well-validated Asthma Control Test (ACT) 28 and Asthma Quality of Life Questionnaire (AQLQ) 29.