Table 3.
Characteristics of patients receiving noninvasive positive pressure ventilation (NPPV) according if they were or were not recruited in the study
| Recruited (n = 15) | Non-recruited (n = 23) | P | |
|---|---|---|---|
| Age, years, mean (SD) | 80 (5) | 79 (4) | 0.803 |
| Male, n (%) | 12 (80) | 14 (61) | 0.294 |
| BMI, Kg/m2, mean (SD) | 25 (4) | 25 (3) | 0.537 |
| Charlson score, median (IQR) | 2 (1-2) | 2 (1-1) | 0,535 |
| pH, mean (SD) | 7.27 (0.02) | 7.28 (0.01) | 0.677 |
| PaO2/FiO2, mean (SD) | 163 (60) | 169 (15) | 0.988 |
| PaCO2 mmHg, mean (SD) | 76 (7) | 75 (10) | 0.647 |
| APACHE III score, mean (SD) | 71 (9) | 70 (6) | 0.804 |
| 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) | 0.883 |
APACHE, acute physiology and chronic health evaluation; BMI, body mass index;
CAP, community-acquired pneumonia; FiO2, fraction of inspired oxygen; IQR, interquartile range; PaCO2, partial pressure of arterial carbon dioxide; PaO2, partial pressure of arterial oxygen; SD, standard deviation.