Table II.

Multivariate Cox regression analysis for the overall survival rates of ccRCC patients.

Risk factors	Relative risk	95% Confidence interval	P-value
T stage	1.291	0.545–1.143	0.266
N stage	1.993	1.185–3.417	0.009
M stage	4.257	2.264–9.863	<0.001
Age	0.621	0.505–1.002	0.137
Size	0.840	0.603–1.578	0.740
Gender	0.714	0.481–1.173	0.306
Fuhrman Grade	9.108	1.398–7.601	0.122
FER expression	0.560	0.437–0.964	0.028

ccRCC, clear cell renal cell carcinoma.