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CCI = Charlson Comorbidity Index; RPN = Robotic partial nephrectomy; RRN = Robotic radical nephrectomy; T1a and T1b = Clinical stages of renal masses; BMI = Body Mass Index
| Variable | OR | 95% CI |
| CCI 1 vs 0 | 1.08 | (0.40, 2.92) |
| CCI >=2 vs 0 | 1.35 | (0.50, 3.67) |
| T1b vs T1a tumor | 8.97 | (3.93, 20.48) |
| Age | 1.03 | (0.99, 1.07) |
| BMI | 0.99 | (0.93, 1.05) |
