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.