Table 3.
Relevant parameters before and after quality control.
| Characteristics | Before Quality Control (QCB group) | After Quality Control (QCA group) | P value |
|---|---|---|---|
| N = 3,936 | N = 3,734 | ||
| FiO2 avg (%) | 39.9 ± 8.5 | 32.1 ± 9.1 | <0.001 |
| PaO2 avg (mmHg) | 139.1 ± 36.8 | 112.3 ± 30.0 | <0.001 |
| PEEP avg (cmH2O) | 5.3 ± 1.5 | 5.4 ± 1.3 | 0.304 |
| VT avg (ml) | 337.2 ± 149.6 | 321.9 ± 140.4 | <0.001 |
| RR avg (bpm) | 17.1 ± 2.6 | 17.1 ± 2.5 | 0.448 |
| FiO2 max (%) | 52.7 ± 30.6 | 47.6 ± 34.8 | <0.001 |
| PaO2 max (mmHg) | 193.6 ± 98.4 | 154.7 ± 66.1 | <0.001 |
| PEEP max (cmH2O) | 6.3 ± 3.4 | 6.1 ± 3.3 | 0.006 |
| VT max (ml) | 395.3 ± 133.4 | 382.7 ± 136.9 | <0.001 |
| RR max (bpm) | 27.3 ± 7.9 | 27.3 ± 8.1 | 0.868 |
| FiO2 min (%) | 35.4 ± 10.0 | 26.9 ± 8.8 | <0.001 |
| PaO2 min (mmHg) | 101.2 ± 44.9 | 85.3 ± 32.3 | <0.001 |
| PEEP min (cmH2O) | 4.5 ± 1.3 | 4.7 ± 1.2 | <0.001 |
| VT min (ml) | 297.1 ± 180.8 | 280.0 ± 173.2 | <0.001 |
| RR min (bpm) | 9.7 ± 4.2 | 10.0 ± 4.2 | 0.003 |
Quantitative data are expressed as the mean ± SD.