Table 2. Univariate logistic regression analysis of each factor associated with mortality and critical condition.

On admission status	Mortality			Critical condition
	OR	AUC	p value	OR	AUC	p value
	(95% CI)			(95% CI)
Plasma PCR	18.75	0.7851	0.002	72.0000	0.8198	<0.001
(positive to negative)	(3.9168–89.7584)			(12.9830–399.2905)
Sex (female to male)	4.1481	0.6707	0.048	1.5680	0.5533	0.403
	(0.9633–17.8618)			(0.5503–4.4677)
Age (years)	1.1835	0.9412	<0.001	1.0853	0.8247	<0.001
	(1.0695–1.3097)			(1.0410–1.1315)
LDH (U/L)	1.0049	0.6633	0.098	1.0091	0.7508	<0.001
	(0.9992–1.0107)			(1.0039–1.0143)
CRP (mg/dL)	1.0697	0.6968	0.196	1.1162	0.7455	0.007
	(0.9686–1.1814)			(1.0292–1.2107)
D-dimer (μg/mL)	1.5524	0.8889	<0.001	1.3244	0.7734	0.004
	(1.0707–2.2509)			(0.9882–1.7748)
Ferritin (ng/mL)	1.0002	0.5890	0.664	1.0006	0.6343	0.036
	(0.9994–1.0009)			(1.0000–1.0012)
Absolute lymphocyte count (/μL)	0.9987	0.6827	0.108	0.9990	0.6201	0.094
	(0.9970–1.0004)			(0.9978–1.0002)
Ct value of the nasopharyngeal PCR	0.6767	0.8656	<0.001	0.6698	0.8849	<0.001
	(0.5029–0.9106)			(0.5080–0.8833)
4C Mortality Score	1.7441	0.9532	<0.001	1.5507	0.8983	<0.001
	(1.2694–2.3964)			(1.2610–1.9069)
CURB-65	4.5482	0.9244	<0.001	3.6584	0.8465	<0.001
	(2.0303–10.1889)			(2.0649–6.4816)
A-DROP	4.4331	0.9351	<0.001	3.7778	0.8904	<0.001
	(2.0729–9.4803)			(2.1474–6.6462)

Abbreviations: OR, odds ratio; CI, confidence interval; AUC, area under the receiver operating characteristic curve; LDH, lactate dehydrogenase; CRP, C-reactive protein.