Characteristics of patients who have died after being set-up on noninvasive ventilation (NIV)
| Alive | Deceased | p-value | |
| Subjects n | 30 | 10 | |
| Age at death | 54.0±8.7 | ||
| Age at admission | 45.3±12.9 | 52.9±9.1 | 0.074 |
| Gender male | 15 (50) | 4 (40) | 0.721 |
| NIV indicated | 13 (43) | 8 (80) | 0.044 |
| PCO2 at admission | 6.6±0.8 | 7.6±1.6 | 0.006 |
| PCO2 at follow-up | 6.0±0.6 | 6.7±0.7 | 0.004 |
| Hours of NIV at follow-up | 3.4 (0–10.4) | 1.6 (0.2–7.9) | 0.240 |
| FEV1 % pred | 71±19 | 58±15 | 0.074 |
| FVC % pred | 71±20 | 57±16 | 0.040 |
Data are presented as mean±sd, n (%) or median (range), unless otherwise stated. Values in bold represent statistically significant results. PCO2: carbon dioxide tension; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity.