Table 2.

Multivariate Cox's hazards model analysis for prognostic factors

Variable	Hazard ratio (95% CI)	P
microRNA-222 expression (high versus low)	6.17 (2.33-10.39)	<0.001
Sex distribution (male versus female)	1.29 (0.35-2.34)	0.47
Age (<60 years versus ≥60 years)	1.12 (0.67-1.99)	0.32
Stage (≥T2 versus Ta-T1)	2.98 (1.91-5.69)	0.003
Grade (G3 versus G1/G2)	3.01 (1.78-8.11)	0.002
Number of tumors (multiple versus single)	1.92 (0.92-4.91)	0.11