Results
Table 1 gives an overview of the study population which had a mean age of about 12.5 years in both groups and with 58% males in the current asthma group. The percentage of any parental asthma was higher in the asthma group (46%) than in the group reported no current asthma (16%). The geometric means of FENO and the allergen-specific IgE level were higher (18 and 2.3 respectively) in the asthma group than in the no current asthma group (12.9 and 0.3, respectively). The mean blood eosinophil count was higher in the asthma group (0.4 vs. 0.3), but the reported ICS was lower in the no current asthma group, at 0.2%, than in the asthma group, at 44%.
Here, we will only present results from models using the continuous variable allergen-specific IgE level to maximize statistical power. The Online Supplemental material shows results for the dichotomous variable IgE positive.