Table 1.

Logistic regression results for probability of retreatment at 4 months after the procedure^*

		95% Confidence Intervals
Effects	OR	Lower	Upper	P-values
Medications Used before Procedure
None	ref
5-ARI	2.92	2.33	3.66	<0.001
Alpha Blocker	1.95	1.69	2.25	<0.001
Anti-Spasmodic	5.19	3.16	8.53	<0.001
Multiple Medications	2.49	1.98	3.13	<0.001
Age (Per year)	1.06	1.04	1.07	<0.001
Comorbidity
0	ref
1	1.16	0.98	1.38	0.088
>=2	1.39	1.11	1.76	0.005
Surgery Year
2009	ref
2007	1.02	0.87	1.20	0.776
2008	1.04	0.90	1.21	0.590
Laser vs. TURP	1.28	1.13	1.45	<0.001

^*Retreatment was defined as filled prescriptions for medical therapy or surgery up to 4 months after the initial surgical procedure.