Table 2. Univariate and multivariate analyses of risk factors predicting progression free survival in patients with renal cancer.

		Univariate		Multivariate
Variable	Cutoff	HR (95% CI)	P value	HR (95% CI)	P value
Age	≤65 vs >65	-0.102 (-0.508–0.292)	0.613	0.054 (-0.382–0.481)	0.806
Gender	Male vs Female	-0.232 (-0.626–0.175)	0.246	-0.336 (-0.761 –　0.094)	0.124
Grade	G1-2 vs G3-4	-0.499 (-0.954–0.053)	0.039	0.057 (-0.644–0.838)	0.879
T stage	T1-2 vs T3-4	-0.316 (-0.747–0.190)	0.171	-0.535 (-1.25–0.201)	0.151
Preoperative neutrophil count	≤6000 vs >6000	-0.480 (-0.964–0.136)	0.068	-0.248 (-0.734–0.32)	0.365
Serum soluble B7-H4	Negative vs Positive	-0.797 (-1.41 –-0.314)	0.001	-0.949 (-1.59 –-0.316)	0.002

HR hazard ratio, CI confidence interval. Multiple regression model was used for statistical analyses. P value of < 0.05 was considered statistically significant