TABLE 5.

Univariate and multivariate Cox regression analyses in the entire group.

Variable	Univariate analysis			Multivariate analysis
	p	Hazard ratio	95% Confidence interval	p	Hazard ratio	95% Confidence interval
Age (≥60/<60)	0.499	1.141	0.779–1.671
Sex (female/male)	0.162	1.320	0.894–1.948
AJCC stage (IV+III/II+I)	< 0.001	2.835	1.934–4.157	< 0.001	2.465	1.672–3.636
Histologic grade (G4+G3/G2+G1)	0.660	1.091	0.739–1.611
Risk score (high/low)	< 0.001	2.958	2.015–4.342	< 0.001	2.596	1.763–3.822

Bold font means P < 0.05.