Additional file 2: of Umeclidinium/vilanterol versus fluticasone propionate/salmeterol in COPD: a randomised trial

Study design Figure. Abbreviations: BDI, Baseline Dyspnoea Index; CAT, COPD Assessment Test; FP/SAL, fluticasone propionate/salmeterol; FEV1, forced expiratory volume in 1 s; ITT, intent-to-treat; mMRC, modified Medical Research Council SGRQ-C, St George’s Respiratory Questionnaire for COPD; TDI, Transition Dyspnoea Index; UMEC, umeclidinium; VI, vilanterol. (PDF 425 kb)