CELEB.

Trial name or title	Lung volume reduction in COPD ‐ surgery vs endobronchial valves
Methods	Randomised parallel trial. Follow‐up: unknown Estimated enrolment: 152 participants
Participants	Patients suffering from heterogeneous emphysema
Interventions	Lung volume reduction surgery vs endobronchial valves
Outcomes	Primary: change in iBODE score (a composite of BMI, FEV1, MRC dyspnoea score and shuttle walk test distance) 1 year post procedure Secondary Health‐related quality of life is measured by the COPD assessment test score (CAT). Physical activity level Change in residual volume (RV) Fat‐free mass
Starting date	April 2016
Contact information	Dr Nick Hopkinson
Notes	ISRCTN19684749