Table 4.

Multivariate analysis

Factor	Estimate + SE	Hazard ratio (95% CI)	P
MSKCC risk group	0.56 ± 0.07	1.75 (1.65; 1.85)	< .001
Hypercoagulability	0.51 ± 0.09	1.63 (1.5; 1.76)	< .001
Non-clear RCC	0.29 ± 0.10	1.35 (1.21; 1.49)	.002
≥ 2 metastatic sites	0.27 ± 0.09	1.3 (1.1; 1.5)	.003
Age > 60 y	0.25 ± 0.08	1.26 (1.05; 1.47)	.007

SE – standard error; CI – confidence interval, P – P value (Wald test)