Bronchodilator responses in spirometry with the highest reversibility chosen from each steroid-naïve asthma patient (N=219)
| Mean±sd | Median (IQR) | Patients | |
| ΔFEV1, mL | 294±270 | 230 (130–400) | 219 |
| ΔFVC, mL | 210±354 | 130 (30–300) | 219 |
| ΔFEV1, % of the initial FEV1 | 11.6±10.7 | 9.5 (4.8–15.3) | 219 |
| ΔFVC, % of the initial FVC | 6.6±10.9 | 3.7 (0.8–8.5) | 219 |
| ΔFEV1, % of the predicted FEV1 | 8.3±7.2 | 7.0 (3.9–10.8) | 219 |
IQR: interquartile range; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity. The data are not normally distributed. The mean values are shown to make it easier to compare results with other studies.