Bronchodilator responses in spirometry with the highest reversibility chosen from each steroid-naïve asthma patient (N=219)

Mean±sdMedian (IQR)Patients
ΔFEV1, mL294±270230 (130–400)219
ΔFVC, mL210±354130 (30–300)219
ΔFEV1, % of the initial FEV111.6±10.79.5 (4.8–15.3)219
ΔFVC, % of the initial FVC6.6±10.93.7 (0.8–8.5)219
ΔFEV1, % of the predicted FEV18.3±7.27.0 (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.