. Author manuscript; available in PMC: 2014 Apr 1.

Published in final edited form as: Am J Clin Oncol. 2013 Apr;36(2):132–142. doi: 10.1097/COC.0b013e3182438ddf

Table 5.

Multivariate analysis of factors that influence overall survival in patients with renal cell carcinoma

Variable	Categories	N	H.R.	95% CI for H.R.		p-value
Variable	Categories	N	H.R.	Lower	Upper	p-value

Age at diagnosis of RCC	<60	3,799	0.54	0.49	0.58	<0.001
Age at diagnosis of RCC	≥60 yrs	3,156	-			<0.001
Gender	Male	2,593	1.22	1.12	1.33	<0.001
Gender	Female	4,362	1.00			<0.001
Race	Others	5,858	1.23	1.10	1.37	<0.001
Race	Whites	1,097	1.00			<0.001
Marital status	Others^a	4,710	1.34	1.23	1.46	<0.001
Marital status	Married	2,245	1.00			<0.001
Summary stage	Regional or Distant	4,739	2.94	2.68	3.22	<0.001
Summary stage	Localized	2,216	1.00			<0.001
Grade	PD or UD	4,592	1.83	1.68	1.99	<0.001
Grade	WD or MD	6,718	-			<0.001
Size of tumor	≤5cm	3,586	0.69	0.63	0.75	<0.001
Size of tumor	>5cm	3,369	-			<0.001
Radiation therapy	No	302	0.39	0.34	0.45	<0.001
Radiation therapy	Yes	6,653	-			<0.001
Laterality	Unilateral	6,952	0.31	0.14	0.71	0.001
Laterality	Bilateral	6				0.001

Hazards ratio (H.R.), confidence interval (CI), only primary cancer (OPC), second primary cancer (SPC), well differentiated (WD), moderately differentiated (MD), poorly differentiated (PD)

Variables not in the final model: Sequence of RCC (OPC vs. SPC).