Table 2. Uni- and multivariate analyses for predicting over-all survival rate.

Variables	Univariate analysis		Multivariate analysis
	Hazard ratio	P value	Hazard ratio	P value
	(95% confience interval)		(95% confience interval)
Age (years)	1.000 (0.965-1.037)	0.9845	―	―
Gender (male vs. female)	0.690 (0.268-1.778)	0.4421	―	―
BMP-2 methylation status (positive vs. negative)	0.363 (0.146-0.901)	0.0289	0.631 (0.245-1.624)	0.3393
BMP-2 expression (higher vs. lower)	5.064 (1.487-17.247)	0.0095	3.964 (1.074-14.634)	0.0387
Tumor stage (I or II vs. III or greater)	0.194 (0.078-0.483)	0.0004	0.295 (0.110-0.791)	0.0153
Tumor grade (1 or 2 vs. 3)	0.317 (0.106-0.946)	0.0394	0.537 (0.158-1.831)	0.3207