Univariate logistic regression on the training cohort (n=166)
| OR (95% CI) | |
| Wheezing intensity score | 1.72 (1.26–2.40)*** |
| Dyspnoea intensity score | 1.20 (0.89–1.62) |
| Cough intensity score | 1.10 (0.81–1.49) |
| Airway secretion intensity score | 1.21 (0.89–1.66) |
| Chest tightness intensity score | 1.03 (0.79–1.35) |
| FEV1 (% pred) | 0.95 (0.93–0.97)**** |
| FEV1/FVC (%) | 0.90 (0.86–0.95)**** |
| FENO (ppb) | 1.02 (1.002–1.04)* |
FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; FENO: exhaled nitric oxide fraction. *: p<0.05; ***: p<0.001; ****: p<0.0001.