Table 3.

Area under the receiver operating characteristic curve of OS biomarkers and others parameters in nonsurvivor COVID-19 patients (n = 76).

Predictors	AUC (95% CI)	p value	HR AUC (95% CI)
Age	0.766 (0.660-0.872)	<0 .001	1.08 (1.04-1.12)
CRP	0.638 (0.512-0.764)	0.039	1.004 (1.00-1.01)
MDA	0.553 (0.421-0.685)	0.427	1.06 (0.98-1.14)
TAC	0.601 (0.469-0.733)	0.129	1.01 (0.99-1.02)
MDA+TAC	0.639 (0.513-0.765)	0.037	1.04 (1.01-1.08)

Dependent variable: mortality (yes = 1, no = 0). p value less than 0.05 was considered statistically significant. AUC: area under curve; 95% CI: 95% confidence interval; HR: hazard ratio; CRP: C-reactive protein; MDA: malondialdehyde; TAC: total antioxidant capacity.