Table 1.
Matching criteria at baseline between the non-invasive positive pressure ventilation (NPPV) and the conventional mechanical ventilation (CMV) groups
| NPPV (n = 15) | CMV (n = 15) | P | |
|---|---|---|---|
| pH, mean (SD) | 7.27 (0.02) | 7.27 (0.03) | 0.858 |
| PaO2/FiO2, mean (SD) | 163 (60) | 165 (13) | 0.910 |
| PaCO2 mmHg, mean (SD) | 76 (7) | 78 (13) | 0.596 |
| APACHE III score, mean (SD) | 71 (9) | 73 (6) | 0.396 |
| Kelly-Matthay score, mean (SD) | 3.4 (1.2) | 3.2 (1.0) | 0.633 |
| CAP, n involved lobes, median (IQR) | 2 (1-2) | 1 (1-2) | 0.486 |
| CURB-65 score, median (IQR) | 3 (2-4) | 3 (2-3) | 0.806 |
APACHE, acute physiology and chronic health evaluation; CAP, community-acquired pneumonia; CURB-65, confusion, urea, respiratory rate, blood pressure, age 65 or over; FiO2, fraction of inspired oxygen; IQR, interquartile range; PaCO2, partial pressure of arterial carbon dioxide; PaO2, partial pressure of arterial oxygen; SD, standard deviation.