Baseline characteristics
| Total | Comparator cohort | Home-NIV | ||||||||
| n | n | Total | n | NIV users | n | NIV non-users | n | |||
| Gender, n (% female) | 49 M 20 F (28.9) | 69 | 18 M 9 F (29.6) | 27 | 30 M 12 F (28.5) | 42 | 17 M 11 F (39.3) | 28 | 13 M 1 F (7.1) | 14 |
| Mean age (SD) | 64.55 (8.74) | 69 | 66.48 (8.8) | 27 | 63.31 (8.58) | 42 | 62.54 (8.75) | 28 | 64.86 (8.31) | 14 |
| Mean body mass index (SD) | 27.6 (9.09) | 53 | 26.02 (7.06) | 27 | 29.23 (10.71) | 26 | 32.23 (10.63) | 16 | 21.41 (9.42) | 10 |
| FEV1% predicted mean (SD) | 40.63 (16.63) | 52 | 41.29 (18.61) | 21 | 40.19 (15.45) | 31 | 39.63 (16.28) | 19 | 41.08 (14.7) | 12 |
| Comorbidity potentially contributing to hypercapnia, n (%) | – | – | – | – | 14 (37.8) | 37 | 11 (44) | 25 | 3 (21.4) | 12 |
FEV1, forced expiratory volume in 1 s; NIV, non-invasive ventilation .