Table 2.

Cox Regression Analysis

	Univariate Analysis		Multivariate Analysis
	HR (95% CI)	P	HR (95% CI)	P
Age (≥59 years)	1.40 (0.89–2.20)	0.149	1.30 (0.82–2.07)	0.268
Sex (male/female)	1.14 (0.72–1.80)	0.582	1.13 (0.71–1.80)	0.597
Stage (III/IV)	2.50 (1.44–4.34)	0.001	3.30 (1.80–6.05)	<0.001
Vascular infiltration	0.72 (0.31–1.65)	0.437	1.02 (0.42–2.47)	0.970
Tumor grade (low)	1.36 (0.85–2.17)	0.202	2.07 (1.25–3.44)	0.005
Hyperuricemia (with/without)	2.09 (1.32–3.31)	0.002	1.94 (1.22–3.09)	0.005

Abbreviation: HR, hazard ratio.