COPD	Chronic Obstructive Pulmonary Disease
AECOPD	Acute Exacerbation of Chronic Obstructive Pulmonary Disease
EQ-5D-5L	EuroQol 5-Dimension 5-Level
EQ-VAS	EuroQol Visual Analogue Scale
SPPB	Short Physical Performance Battery
CAT	COPD Assessment Test
SGRQ	St. George’s Respiratory Questionnaire
HRQoL	Health-Related Quality of Life
PR	Pulmonary Rehabilitation
RCT	Randomised Controlled Trial
STROBE	Strengthening the Reporting of Observational Studies in Epidemiology
FEV1	Forced Expiratory Volume in one second
mMRC	Modified Medical Research Council Dyspnoea Scale
SD	Standard Deviation
MICE	Multiple Imputation by Chained Equations
PMM	Predictive Mean Matching