Table 2.

Cox regression analysis of PFS rate in 113 ccRCC patients

Variables	Univariate analysis			Multivariate analysis
	HR	95%CI	P value	HR	95%CI	P value
Gender	0.384	0.163–0.908	0.029	0.131	0.046–0.374	0.000
Age	1.144	0.526–2.489	0.735
Tumor size	8.742	2.036–37.546	0.004	11.696	2.433–56.216	0.002
Furman grade	1.704	0.800–3.628	0.167
T stage	1.610	0.700–3.703	0.263
N metastasis	5.593	2.409–12.984	0.000	2.786	0.904–8.580	0.074
M metastasis	5.730	2.107–15.583	0.001	2.221	0.714–6.909	0.168
TNM stage	4.363	2.014–9.451	0.000	1.895	0.654–5.494	0.239
Venous invasion	1.605	0.483–5.338	0.440
Location side	1.022	0.487–2.147	0.954
SR-BI expression	3.014	1.317–6.898	0.009	2.926	1.175–7.285	0.021

HR hazard ratio, CI confidence interval