Standard medical therapy versus non-invasive ventilation
| Parameter | SMT (n=25) | NIV (n=24) | p Value |
| OOH course | |||
| Effectiveness of treatment, n (%) | 20 (80%) | 24 (100%) | 0.05 |
| Inhospital course | |||
| 90-day survival, n (%) | 22 (88%) | 23 (96%) | 1.0 |
| 28-day survival, n (%) | 23 (92%) | 23 (96%) | 1.0 |
| Hospital stay, days | 17.4±18.0 | 13.9±14.4 | 0.5 |
| ICU stay, n (%) | 17 (68%) | 9 (38%) | <0.05 |
| ICU stay, days | 3.7±6.4 | 1.3±2.6 | 0.03 |
| Mechanical ventilation, days | 3.0±6.0 | 0.9±1.2 | 0.66 |
| Mechanical ventilation, h | 60.0±130.6 | 7.8±23.2 | 0.57 |
| Invasive ventilation, n (%) | 6 (24%) | 1 (4%) | 0.66 |
| NIV, n (%) | 5 (20%) | 14 (58%) | <0.01 |
| Complications, n | 0 | 0 | 1.0 |
ICU, intensive care unit; NIV, non-invasive ventilation; OOH, out-of-hospital; SMT, standard medical treatment.
Complications: no complications due to NIV were observed.