Table 3.

Multivariate Models Using Limited Clinical Data to Predict Mortality in Hospitalized Patients With COVID-19

Model using no laboratory values (COVID-NoLab)
Predictors	β-Coefficient	Std. Error	Z Value	Pr (>|z|)
Constant	−4.010	0.465	−8.620	0.001
Age
50 to 65 years	1.631	0.498	3.270	0.001
> 65 years	2.602	0.478	5.450	< 0.001
Respiratory rate ≥ 30/min	1.352	0.293	4.620	< 0.001
Oxygen saturation < 93 %	1.036	0.288	3.600	< 0.001
AUROCC = 0.771 in the derivation group and 0.803 in the validation group.
Model adding simple blood tests (COVID-SimpleLab)
Predictors	β-Coefficient	Std. Error	Z Value	Pr (>|z|)
Constant	−4.899	0.669	−7.330	0.000
C-reactive protein
11–20 mg/dL	1.316	0.329	4.010	0.000
> 20 mg/dL	1.057	0.510	2.080	0.038
Respiratory rate ≥ 30/min	1.522	0.403	3.770	0.000
Oxygen saturation < 93 %	0.911	0.418	2.180	0.029
Age
50 to 65 years	1.310	0.661	1.980	0.047
> 65 years	2.233	0.640	3.490	0.000
Asthma	0.953	0.428	2.230	0.026
White blood cell count > 10 × 109/mL	0.579	0.348	1.660	0.097
Serum creatinine > 2.0 mg/dL	1.152	0.348	3.310	0.001
AUROCC = 0.835 in the derivation group and 0.833 in the validation group.

AUROCC, area under the receiver operating characteristic curve.