Table 2. Cox regression model for risk factors of intravesical recurrence.

*significant p-value

Variable	Univariate			Multivariate
	HR	95%CI	P value	HR	95%CI	P value
Age	0.984	0.943 - 1.029	0.471	0.961	0.892 - 1.035	0.299
Sex (Male vs Female)	1.503	0.631 - 3.582	0.357	2.694	0.763 - 9.514	0.123
Stage (≥T3 vs	1.314	0.597 - 2.889	0.497	0.456	0.093 - 2.219	0.330
Grade (3 vs 1or2)	1.549	0.699 - 3.429	0.280	3.001	0.869 - 10.35	0.082
Hydronephrosis	0.802	0.357 - 1.802	0.594	0.725	0.239 - 2.201	0.570
Focality (Multi vs Uni)	2.310	0.539 - 9.902	0.259	3.217	0.551 - 18.76	0.194
Delay of NU	1.819	0.759 - 4.358	0.179	0.777	0.234 - 2.571	0.679
Concomitant Bl UC	4.800	1.868-12.34	0.001*	15.01	3.311 - 68.07	0.0004*
Diag. URS (yes vs no)	1.809	0.681 - 4.802	0.234	1.840	0.482 - 7.019	0.372
Surgical margin	1.916	0.715 - 5.129	0.195	1.775	0.299 - 10.52	0.527
Procedure (Lap vs open)	2.358	0.319 - 17.41	0.400	2.265	0.163 - 31.34	0.541
Mitomycin C	0.752	0.299 - 1.890	0.544	0.154	0.025 - 0.922	0.040*
Adjuvant Chemotherapy	0.932	0.275 - 3.154	0.910	1.256	0.174 - 9.044	0.820