Table 1.

Peri-operative features of cohort.

Characteristic	Value*
Mean age at nephrectomy	59 ± 11
Male gender	1205 (65.6%)
BMI	30 ± 6.1
Charlson comorbidity Index	0.83 ± 1.3
Previously on active surveillance	119 (6.5%)
R.E.N.A.L nephrometry score	7.19 ± 1.8
Adverse radiologic features	341 (18.6%)
Underwent radical nephrectomy	97 (5.3%)
Surgery done via minimally invasive approach	771 (42%)
Tumor size (max diameter) on pathology	2.6 ± 0.9
Positive margin	85 (4.6%)
Tumor histology predominantly cc-RCC	1,149 (62.6%)
Nuclear grade
G1/2	827 (45%)
G3/4	672 (36.6%)
NA	338 (18.4%)

^*Mean ± SD; n (%)