Table 2. Relative odds of node positivity among RCC patients.

Characteristic		OR [95% CI]	P
Nodes examined	<15	1	<0.001
	≥15	1.392 [1.349-1.437]
Gender	Female	1	0.633
	Male	0.991 [0.954-1.029]
Age	20-59	1	<0.001
	≥60	0.747 [0.714-0.781]
Race	White	1	<0.001
	Black	1.186 [1.119-1.257]
	Others	1.129 [1.048-1.215]
AJCC T Stage	T1	1	<0.001
	T2	1.378 [1.255-1.513]
	T3	4.458 [4.118-4.825]
	T4	8.439 [7.691-9.260]
Histological type	Adenocarcinoma	1	<0.001
	Mucous/signet-ring cell	1.073 [1.017-1.131]
	Others	0.846 [0.690-1.037]
Grade	Grade I/II	1	<0.001
	Grade III/IV	1.975 [1.891-2.064]