Table 3.

Cox proportional hazards models for mortality prediction by biomarkers and severity scores.

Variable	Univariate Cox model		Multivariate Cox model
	HR (95% CI)	P value	HR (95% CI)	P value
Endocan	1.386 (1.171–1.641)	0.000	1.374 (1.150–1.641)	0.000
PaO2/FIO2	0.96 (0.943–0.978)	0.000	0.958 (0.938–0.978)	0.000
CRP	NA	NA	NA	NA
WBC	NA	NA	NA	NA
PCT	1.063 (1.023–1.105)	0.002	NA	NA
APAHCE II	1.155 (1.040–1.282)	0.007	NA	NA

HR = hazard ratio; NA = not applicable; P value less than 0.05 was considered statistically significant.