TABLE 1.

Demographic data of patients attending focus groups at the Royal Brompton and Glenfield Hospitals

Age years	63±8
Females %	50%
EBV as first-stage intervention %	19%
Second intervention %	31%
Time between diagnosis and functional limitation years	9±7.5
Time since first intervention years	3.8±2.2
Time between referral and initial appointment weeks	28.5±64.6
Time between initial appointment and procedure weeks	38.9±34.7
Time in hospital post-LVRS days	14.3±8.9
Time in hospital post-EBV days	1.5±1.0

Data presented as mean±sd unless otherwise stated. EBV: endobronchial valves; LVRS: lung volume reduction surgery.