Table 2.

Univariable Cox regression results for the association of patient and disease characteristics with cancer-specific and recurrence-free survival among patients with clear cell renal cell carcinoma

	Cancer - specific survival		Recurrence - free survival
	HR (95% CI)	p value	HR (95% CI)	p value
Age	1.01 (0.97 – 1.04)	0.644	0.99 (0.96 – 1.02)	0.526
Tumor size (cm)	1.12 (1.05 – 1.20)	0.001	1.24 (1.13 – 1.36)	<0.001
Gender		0.388		0.892
Female	1		1
Male	0.73 (0.36 – 1.49)		0.96 (0.51 – 1.81)
Grade		<0.001		<0.001
G2	1		1
G3	0.59 (0.10 – 3.54)		4.35 (1.29 – 14.69)
G4	9.11 (2.14 – 38.9)		11.74 (3.41 – 40.45)
Sarcomatoid		<0.001		0.011
No	1		1
Yes	11.45 (4.89 – 26.78)		2.45 (1.23 – 4.9)
SSIGN score	1.26 (1.14 – 1.40)	<0.001	1.16 (1.07 – 1.27)	0.001

HR = hazard ratio; CI = confidence interval.