Table 3.

Multivariable analysis for risk of recurrence

	HR	95% CI for HR	P
Pathologic
Maximum diameter of tumor (per cm)	1.20	1.02–1.41	.02
Perinephric fat invasion	4.49	1.11–18.20	.04
Pathologic T stage			.80
1	Reference
2	0.53	0.08–3.45
≥3	0.84	0.16–4.47
ISUP grade			.76
1	Reference
2	0.99	0.40–2.49
3	0.94	0.28–3.24
4	2.33	0.40–13.59
Tissue protein expression
Ki-67
<1.00%	Reference		.002
≥1.00%	3.73	1.60–8.68