Baseline characteristics
| Bronchiectasis | COPD | p-value | |
| Subjects | 213 | 213 | |
| Age years | 70±11 | 71±10 | 0.48 |
| Male | 77 (36) | 79 (37) | 0.84 |
| FEV1/FVC | 0.68±0.14 | 0.55±0.12 | <0.0001 |
| FEV1 % pred | 68.1±25.7 | 66.5±22.1 | 0.49 |
| MRC Dyspnoea score | 3±1 | 3±1 | 0.50 |
| Body mass index kg·m−2 | 27.1±6.11 | 27.2±6.4 | 0.93 |
| Smoking history pack-years | 0 (0–8) | 35 (18–50) | <0.0001 |
| Exacerbations in past year n | 2 (0–4) | 1.5 (1–3) | 0.21 |
| ISW distance m | 250 (120–390) | 255±180 | 0.54 |
| CRQ-Dyspnoea score | 15.6±5.8 | 15.0±6.2 | 0.27 |
| CRQ-Fatigue score | 13.9±4.9 | 14.1±5.1 | 0.61 |
| CRQ-Emotional Function score | 30.8±8.7 | 31.2±9.3 | 0.68 |
| CRQ-Mastery score | 19.1±5.5 | 18.8±5.7 | 0.62 |
| CRQ-Total score | 79.4±19.8 | 79.0±21.6 | 0.84 |
Data are presented as n, n (%), mean±SD or median (interquartile range), unless otherwise stated. COPD: chronic obstructive pulmonary disease; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; MRC: Medical Research Council; ISW: incremental shuttle walk; CRQ: Chronic Respiratory Disease Questionnaire.