Table 2 Comparison of area under curve (AUC) for the different PaO2/FIO2 ratios and scores
AUC ± SD% (95% CI) | Cut-off levels | Sensitivity | Specificity | Pvalue | |
|---|---|---|---|---|---|
PaO2/FIO2 ratio on admission | 58.8 ± 8.8 (54.6 - 66.9) | 314 | 63% | 58% | 0.001 |
PaO2/FIO2 ratio at 3 h | 77.2 ± 2.9 (71.2 - 82.8) | 255 | 81% | 69% | <0.001 |
PaO2/FIO2 ratio at 6 h | 67.3 ± 3.2 (60.9 - 73.6) | 301 | 61% | 68% | <0.001 |
PaO2/FIO2 ratio at 12 h | 71.1 ± 3.2 (64.9 - 77.6) | 265 | 70% | 64% | <0.001 |
PaO2/FIO2 ratio at 24 h | 63.4 ± 3.3 (57.0 - 69.8) | 300 | 62% | 57% | <0.001 |
EuroSCORE | 71.1 ± 4.4 (62.5 - 79.7) | 6.5 | 69.4% | 56.3% | <0.001 |
Parsonnet | 68.7 ± 5.1 (58.8 - 78.7) | 12.5 | 63.9% | 66.4% | <0.001 |
SAPS II | 78.5 ± 4 (70.6 - 86.4) | 27.5 | 80.6% | 70% | <0.001 |
APACHE II | 82 ± 3.9 (74.4 - 89.6) | 13.5 | 72.2% | 63.3% | <0.001 |
APACHE III | 79.6 ± 4.5 (70.8 - 88.4) | 51.5 | 75% | 62.1% | <0.001 |