IGHE and asthma: In the whole cohort, the 15D score at the follow-up visit correlated with symptom measures (ACT rho = 0.499, p < 0.001, AQ20 rho = −0.576, p < 0.001) and baseline 15D score (rho = 0.567, p < 0.001) and showed a weak correlation with lung function measures (pre-BD FEV1 rho = 0.191, p<0.008 and post-BD FEV1 rho = 0.200, p < 0.005), BMI (rho = −0.245, p = 0.001) and age (rho = −0.277, p<0.001) but no correlation with traditional asthma biomarkers (FeNO, blood eosinophils, total IgE) or smoked pack-years.