Table 3.

Performance comparison of the machine learning models for COVID-19.

Metric	Diagnostic model				Disease severity model
	RNA	DT	PLS-DA	K-NN	RNA	DT	PLS-DA	K-NN
Training time	21 min. 43 s	27 min. 11 s	31 min. 19 s	22 min. 15 s	7 min. 1 s	10 min. 19 s	18 min. 3 s	09 min. 53 s
Calibration error	1.0%	0.5%	1.2%	0.5%	1.0%	8.4%	6.0%	0.4%
Cross validation error	0.8%	1.0%	0.9%	0.6%	0.5%	1.8%	4.0%	0.7%
Sensibility	0.93	0.89	0.88	0.84	0.99	0.90	0.87	0.82
Specificity	0.94	0.89	0.90	0.83	0.97	0.94	0.88	0.88
Accuracya	0.94	0.90	0.90	0.84	0.98	0.92	0.88	0.86

^aArea under the ROC curve.