Fig. 4

Mean change from baseline in FEV1 over 36 h (per protocol population). Data are LS means ± standard error. The number of patients exposed to each treatment differed from the number of non − missing observations for navafenterol 1800 μg (at 45 min and 2 h; both n = 30) and placebo (at 12 and 14 h; n = 31 and n = 30, respectively). FEV1 = forced expiratory volume in 1 s; LS = least squares