Kaplan-Meier curve for progression-free survival (PFS) for the CN and no-CN groups. CN = cytoreductive nephrectomy; HR = hazard ratio; CI = confidence interval; IMDC = International Metastatic Renal Cell Carcinoma Database Consortium.
1 Adjusted for IMDC prognostic factors.
2 Adjusted for IMDC prognostic factors, age, and bone metastases.