Table 5. ROC curves to evaluate the predictive value of the prognostic factors on survival outcomes.

Characteristics	AUC	SE	P	95% CI	Sensibility	Specificity
Tumor grade: III–IV	0.605	0.037	0.010	0.525–0.671	58.90	46.72
Vascular invasion	0.631	0.045	0.009	0.527–0.672	64.30	50.80
TNM staging: III–IV	0.687	0.039	<0.001	0.583–0.725	67.92	49.20
NLR >3.8	0.778	0.032	<0.001	0.640–0.778	91.11	75.80
PLR >182.1	0.713	0.037	<0.001	0.585–0.726	75.02	57.55

ROC, receiver operating characteristic; NLR, neutrophil-lymphocyte ratio; PLR, platelet-lymphocyte ratio.