Fig. 3
Trough FEV1 (a) and peak post-dose FEV1 (b) in Chinese and symptomatic NMT patients. Data labels within columns are N number. * P < 0.0001, †P ≤ 0.001, and ‡P ≤ 0.01, compared with GFF MDI. All P-values < 0.05 should only be interpreted in terms of nominal significance as the analyses in these subgroups were exploratory and post-hoc. CAT = COPD Assessment Test; COPD = chronic obstructive pulmonary disease; FEV1 = forced expiratory volume in 1 s; FF = formoterol fumarate; GFF = glycopyrrolate/formoterol fumarate; GP = glycopyrrolate; LSM = least squares mean; MDI = metered dose inhaler; NMT = not maintenance-treated at screening; SE = standard error