Table 4.

Estimated parameters of the models in Grupo Hospitales de Madrid (CH-HM) dataset with alternative specifications for comorbidities.

	EM-3	p-Value	EM-4	p-Value	EM-5	p-Value
Age	0.0299 ***	0.0000	−0.0386 ***	0.0000	−0.0342 ***	0.0000
	(0.0061)		(0.0037)		(0.0060)
Female gender	−0.3935 *	0.0159	−0.4541 **	0.0048	−0.4593 **	0.0044
	(0.1632)		(0.1611)		(0.1937)
Comorbidities	0.1233 ***	0.0000	-	-	-	-
	(0.0210)		-		-
Charlson Index	-	-	0.1898 **	0.0064	-
	-		(0.0696)		-
Elixhauser Index	-	-	-	-	0.1937 ***	0.0000
	-		-		(0.0451)
Oxygen saturation extremely low	1.7599 ***	0.0000	1.7108 ***	0.0000	1.6997 ***	0.0000
	(0.3074)		(0.3058)		(0.3048)
Oxygen saturation low	0.7813 ***	0.0001	0.8157 ***	0.0000	0.8020 **	0.0001
	(0.2021)		(0.1995)		(0.1998)
Oxygen saturation medium	0.5772 **	0.0016	0.5751 **	0.0014	0.5818 **	0.0013
	(0.1826)		(0.1805)		(0.1813)
CRP (μg/dL)	0.0031 ***	0.0001	0.0028 ***	0.0002	0.0031 ***	0.0001
	(0.0008)		(0.0008)		(0.0008)
Leukocytes (103/L)	0.0596 ***	0.0001	0.0612 ***	0.0000	0.0623 ***	0.0000
	(0.0154)		(0.0151)		(0.0153)
Lymphocyte/leukocyte ratio	−3.8257 ***	0.0000	−3.9553 ***	0.0000	−3.8329 ***	0.0000
	(0.8623)		(0.8534)		(0.8623)
D-dimer/Reference value 1	0.0149 **	0.0011	0.0155 ***	0.0009	0.0149 **	0.0013
	(0.0046)		(0.0047)		(0.0046)
No. Observations	1.622	-	1.622	-	1.622	-
AUC	0.8187	-	0.8059	-	0.8107	-

¹ Reference value = 500 ng/Ml. Standard errors in brackets. AUC = area under the curve. Significance: *** p < 0.001, ** p < 0.01, * p < 0.05.