Table 2.

Univariate and multivariate analysis of factors associated with overall survival in ccRCC patients

Variable	Univariate analysis			Multivariate analysis
	Risk ratio	95% CI	P	Risk ratio	95% CI	P
Gender
Male vs Female	0.913	0.617-1.593	0.378
Age (years)
≥ 65 vs < 65	1.764	0.712-2.349	0.447
Tumor size
≥ 4 cm vs < 4 cm	2.182	0.593-3.718	0.133
Tumor stage
T3-4 vs T1-2	2.826	1.712-4.936	0.0291	2.315	1.527-4.024	0.019
Histological grade	3.251
III-IV vs I-II		2.148-5.376	< 0.001	2.837	1.893-4.775	0.008
Lymph node
Presence vs Absence	3.752	2.214-7.165	0.008	3.017	2.019-6.833	0.005
MiR-497
Low vs High	2.716	1.933-6.704	0.009	2.583	1.691-6.361	< 0.001