Baseline demographics
| COPD | Non-COPD | All | |
|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | |
| Age (years) | 65.3 (7.6) | 58 (14.4) | 61.8 (11.9) |
| FEV1 (L) | 0.9 (0.5) | 0.7 (0.5) | 0.9 (0.5) |
| FVC (L) | 2.1 (0.9) | 1.1 (0.6) | 1.7 (1) |
| PaO2 (kPa) | 8.4 (1.2) | 8.2 (1.4) | 8.3 (1.3) |
| PaCO2 (kPa) | 6.4 (1.3) | 6.9 (1.3) | 6.7 (1.3) |
| SpO2 (%) | 92 (3) | 89 (6) | 90.4 (4.9) |
| MRC dyspnoea scale | 4 (1) | 4 (1) | 4 (1) |
| Gold (stage) | 3 (1) | NA (NA) | NA (NA) |
| Height (cm) | 167 (8) | 160 (12) | 164 (11) |
| Weight (kg) | 85 (26) | 83.1 (38.2) | 84.4 (31.9) |
| BMI (kg/m2) | 31 (9) | 33.9 (14.3) | 32 (11.5) |
| HADS anxiety score | 8 (4) | 10 (4) | 9 (4) |
| HADS depression score | 7 (4) | 8 (4) | 8 (1) |
| EQ-5D scale score | 57 (16) | 57 (21) | 57 (18) |
| N (%) | N (%) | N (%) | |
| Males | 20 (63) | 9 (32) | 29 (48) |
| NIV | 27 (84) | 25 (89) | 52 (87) |
| LTOT | 19 (59) | 19 (68) | 38 (63) |
| Lives alone | 9 (28) | 10 (36) | 19 (32) |
BMI, body mass index; HADS, hospital anxiety and depression score; LTOT, long-term oxygen therapy; MRC, Medical Research Council; NIV, non-invasive ventilation.