Table 2.

External validation results of fivefold cross-validation models.

		Taikang			Guanggu
Models	Group	Patients	TD-CI (%)	MADE (days)	Patients	TD-CI(%)	MADE (days)
iCOVID
	All recovered	387	69.2 ± 2.1	5.0 ± 3.4	60	71.5 ± 1.8	4.8 ± 4.0
	Low-risk	306	70.0 ± 1.7	5.0 ± 3.4	32	70.4 ± 2.7	4.4 ± 3.5
	High-risk	81	69.2 ± 2.4	4.9 ± 3.5	28	72.4 ± 0.6	5.3 ± 4.5
iCOVID w/o treatments
	All recovered	387	63.0 ± 1.5	7.0 ± 5.3	60	54.4 ± 3.4	8.2 ± 6.2
	Low-risk	306	63.7 ± 1.0	6.9 ± 5.1	32	49.7 ± 6.3	7.3 ± 5.6
	High-risk	81	62.5 ± 2.7	7.5 ± 5.9	28	54.7 ± 3.3	9.3 ± 6.7
iCOVID w/o CT images
	All recovered	387	69.2 ± 2.7	5.4 ± 3.7	60	72.5 ± 1.0	5.2 ± 4.2
	Low-risk	306	69.7 ± 3.0	5.4 ± 3.6	32	70.2 ± 2.3	4.7 ± 3.6
	High-risk	81	68.9 ± 2.9	5.1 ± 3.7	28	71.9 ± 2.8	5.8 ± 4.8

w/o without, low-risk mild and moderate, high-risk severe and critical.