Asthma Control Questionnaires
Asthma control was assessed using age-appropriate standardized
questionnaires (Test for Respiratory Asthma Control in Kids(TRACK)) completed by parents with children younger than 5 years. The
questionnaire was completed before and after the TA-B-BAL procedure in
the case group and at clinic visits for the control group. A higher
score indicates greater asthma control and scores greater than 80
indicate that asthma control was achieved21.
Information about the number of exacerbations, hospitalizations,
emergency room visits, oral steroid courses and pulmonary function tests
was collected in a standardized fashion for all patients. A clinically
meaningful change in TRACK score was defined as a difference of 10
points 22. It should be noted that formalized
questionnaires were instituted in 2014.