Characteristics | Early PR group (n=70) | Stable PR group (n=61) |
Age years | 72.7±9.4 | 74.4±7.8 |
Male n (%) | 29 (41) | 25 (41) |
FEV1 L | 1.0±0.4 | 1.0±0.4 |
FEV1 % predicted | 40.2±15 | 44.1±17 |
MRC dyspnoea score | 3.4±0.9 | 3.1±0.8 |
CAT score | 16.8±6.0 | 14.7±5.3 |
LTOT n (%) | 3 (5) | 5 (8) |
BMI kg·m−2 | 23.5±4.6 | 24.2±4.1 |
Smoking n (%) | ||
Current | 22 (31) | 15 (25) |
Former | 45 (64) | 43 (70) |
Never | 3 (4) | 3 (5) |
Exposure pack-years | 40.6±16.5 | 43.5±19.5 |
GOLD assessment | ||
Group C n (%) | 4 (6) | 5 (8) |
Group D n (%) | 66 (94) | 56 (92) |
ISWT distance m | 186±117 | 188±110 |
ESWT time s | 216±199 | 263±210 |
ESWT level | 6.0±3.6 | 6.3±3.6 |
Data are presented as mean±sd unless otherwise stated. PR: pulmonary rehabilitation; FEV1: forced expiratory volume in 1 s; MRC: Medical Research Council; CAT: COPD Assessment Test; LTOT: long-term oxygen therapy; BMI: body mass index; GOLD: Global Initiative for Chronic Obstructive Lung Disease; ISWT: incremental shuttle walk test; ESWT: endurance shuttle walk test.