Table 2. Univariate and multivariate analysis for overall survival (OS) in kidney cancer patients.

Variables	5-year OS	Univariate analysis		Multivariate analysis
		Log rank Χ2	P value	HR	95% CI	P value
Sex
Male	64.70%	48.23	<0.001	Reference
Female	67.50%			0.89	0.87-0.91	<0.001
Age
<60	77.90%	12093.60	<0.001	Reference
60-70	68.70%			1.38	1.34-1.42	<0.001
70-80	58.60%			1.84	1.78-1.89	<0.001
>80	32.20%			2.61	2.52-2.71	<0.001
Race
White	65.60%	136.86	<0.001	Reference
Black	65.00%			1.07	1.04-1.11	<0.001
American Indian/Alaska Native	63.40%			0.97	0.87-1.09	0.587
Asian/Pacific Islander	68.50%			0.87	0.82-0.91	<0.001
Unknown	90.50%			0.31	0.23-0.42	<0.001
Grade
High/Moderate	83.10%	16886.37	<0.001	Reference
Poor/Undifferentiation	60.50%			1.70	1.65-1.75	<0.001
Unknown	42.00%			1.65	1.60-1.71	<0.001
TNM
I	83.10%	59552.13	<0.001	Reference
II	76.80%			1.43	1.36-1.50	<0.001
III	63.10%			0.83	0.75-0.93	0.001
IV	10.30%			2.04	1.81-2.30	<0.001
Unknown	42.90%			1.54	1.44-1.65	<0.001
SEER Stage
Localized	81.60%	61354.67	<0.001	Reference
Regioned	58.90%			2.73	2.46-3.03	<0.001
Distant	9.40%			4.27	3.79-4.81	<0.001
Unstage	25.90%			1.69	1.57-1.83	<0.001
Marital Status
Married	69.50%	3122.46	<0.001	Reference
Divorced/Separated	63.20%			1.25	1.21-1.30	<0.001
Widowed	46.40%			1.25	1.21-1.29	<0.001
Single	67.20%			1.18	1.14-1.22	<0.001
Therapy
Surgery, radiation or both	75.00%	39178.54	<0.001	Reference
No surgery, radiation	17.60%			2.49	2.41-2.56	<0.001
Unknown	30.40%			2.30	2.11-2.50	<0.001