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Sensitivity and specificity at the cutoff of the highest Youden index
| Cutoff | Sensitivity | Specificity | |
|---|---|---|---|
| LTC (mL/cmH2O) | 54 | 0.759 | 0.818 |
| RR (/min) | 21 | 0.895 | 0.636 |
| RSBI | 72 | 0.982 | 0.455 |
| APACHE II | 21 | 0.815 | 0.636 |
| HR (bpm) | 81 | 0.698 | 0.727 |
| TV (mL) | 451 | 0.500 | 0.909 |
Youden index = sensitivity + specificity − 1
LTC lung-thorax compliance, RR respiratory rate, RSBI rapid shallow breathing index, APACHE II score Acute Physiology and Chronic Health Evaluation II score, HR heart rate, TV tidal volume
