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| Area under curve | |
|---|---|
| ROX at 12 h after HFNC | 0.659 |
| ROX at 1 h after HFNC | 0.605 |
| Heart rate 1 h after HFNC | 0.393 |
| Respiratory rate 1 h after HFNC | 0.429 |
| Heart rate 12 h after HFNC | 0.440 |
| Respiratory rate 12 h after HFNC | 0.411 |
The sensitivity and specificity would be 0.88 and 0.41 if cutoff value for ROX 12 h would be 5.626. HFNC: High-flow nasal cannula
