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Sensitivity, specificity, PPV, and NPV of RSBI, DE, and DTF to predict successful extubation
| Parameter | Cut-off | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
|---|---|---|---|---|---|
| RSBI (breaths/min/L) | 100 | 66.7 | 53.8 | 66.7 | 53.8 |
| DE (mm) | 11.43 | 77.8 | 84.6 | 87.5 | 73.3 |
| DTF (%) | 22.33 | 61.1 | 84.6 | 84.6 | 61.1 |
PPV: positive predictive value; NPV: negative predictive value; RSBI: rapid shallow breathing index; DE: diaphragm excursion; DTF: diaphragm thickening fraction.
