Table 5. Accuracy of the novel models for prediction of patients at risk of high-flow oxygen support.

	Baseline model	Baseline and evolutionary model
Enrolled patients	390	191
ROC	0.800	0.877
Cut-off value	11	12
Sensitivity, % (95% CI)	45.1 (36.5–53.9)	55.2 (37.6–72.6)
Specificity, % (95% CI)	94.8 (91.4–96.9)	92.0 (86.8–95.3)
Negative predictive value, % (95% CI)	79.1 (74.4–83.2)	92.0 (86.8–95.3)
Positive predictive value, % (95% CI)	79.7 (68.8–87.5)	55.2 (37.6–72.6)
Diagnostic accuracy, % (95% CI)	73.2 (74.9–83.0)	86.4 (80.8–90.5)