Table 3.

Multivariable models looking at death from any cause and cancer-specific death

Death from Any Cause
Feature	HR (95% CI)	P-value
Age at Surgery (years)	1.05 (1.04 – 1.06)*	<0.001
Charlson Comorbidity Index	1.23 (1.17 – 1.30)*	<0.001
Chronic Kidney Disease
Absent	1.0 (reference)
Present	1.76 (1.29 – 2.41)	<0.001
2002 Primary Tumor Classification
pT1b	1.0 (reference)
pT3a	1.96 (1.34 – 2.86)	<0.001
Maximal Tumor Size (cm)	1.16 (1.03 – 1.31)*	0.015
Histologic Subtype
Benign	1.0 (reference)
RCC	2.18 (1.12 – 4.24)	0.022
Type of Surgery
Partial	1.0 (reference)
Radical	0.94 (0.69 – 1.27)	0.665

Death from RCC
Feature	HR (95% CI)	P-value
Age at Surgery (years)	1.02 (1.00 – 1.04)*	0.019
Chronic Kidney Disease
Absent	1.0 (reference)
Present	2.91 (1.55 – 5.47)	<0.001
2002 Primary Tumor Classification
pT1b	1.0 (reference)
pT3a	4.35 (2.50 – 7.56)	<0.001
Maximal Tumor Size (cm)	1.66 (1.29 – 2.16)*	<0.001
Type of Surgery
Partial	1.0 (reference)
Radical	1.97 (0.92 – 4.20)	0.079

^*HRs represent a 1-unit increase in the feature listed.