Table 3.

Multivariate logistic regression analysis for progression

	p-value	Odds ratio	95% CI
History	0.002	3.630	1.611-8.182
Age	0.675	1.008	0.970-1.048
Gender	0.842	1.114	0.388-3.200
No. of tumors (single/multiple)	0.465	1.344	0.608-2.968
Size of tumor (> 3 cm /< 3 cm)	0.251	1.662	0.698-3.954
Stage (Ta/T1)	0.438	1.461	0.561-3.807
Concomitant Tis (no/yes)	0.561	1.275	0.562-2.893

CI, confidence interval.