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Least-squares mean (95% CI) change from baseline in (a) TDI score, (b) CAT score and (c) SGRQ score (ITT population). *P-values for treatment differences; CAT, COPD Assessment Test; CI, confidence interval; ICS, inhaled corticosteroid; ITT, intent-to-treat; LS, least squares; LABA, long-acting β2-agonist; PBO, placebo; SGRQ, St George’s Respiratory Questionnaire; TDI, Transition Dyspnoea Index; UMEC, umeclidinium.
