Fig. 3

Schedule of enrolment, interventions, and assessments. BDI, baseline dyspnoea index; CATest, COPD (Chronic Obstructive Pulmonary Disease) Assessment Test; EQ-5D-5L, EuroQOL five-dimension questionnaire; hs-cTnI high-sensitivity cardiac troponin I; NTproBNP N-terminal pro-Brain Natriuretic PeptideN; OCS oral corticosteroids; TDI transition dyspnoea index