Microvessel density and heparanase over-expression in clear cell renal cell cancer: correlations and prognostic significances

Table 2 Cox regression analysis in overall survival of RCC patients

Risk factors	RR	95%CI	P
Primary tumor stage
T_{1, 2}	1.579	0.763-3.266	0.218
T_{3, 4}
Distant metastasis
M₀	5.859	2.186-15.706	< 0.0001
M₁
HPA staining
Negative	3.584	1.448-8.870	0.006
Positive
MVD
Low	0.930	0.453-1.911	0.844
High

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