TABLE 3.

Multivariable Analysis for Patients on and off Alpha Blockers

	On Alpha-Blockers (N = 109)		No Alpha-Blockers (N = 283)
	OR (95%)	p Value	OR (95%)	p Value
Whole prostate volume	1.7 (0.2–19.0)	0.649	1.4 (0.4–4.9)	0.560
Transition zone volume	0.2 (0.1–0.8)	0.030	0.7 (0.3–1.8)	0.506
Prostatic urethral length	3.5 (1.5–8.5)	0.004	1.0 (0.3–1.8)	0.891
Maximum urethral angle	1.7 (1.1–2.6)	0.022	1.0 (0.8–1.3)	0.863
Volume posterior prostate	1.8 (0.5–7.6)	0.392	1.3 (0.7–2.8)	0.444
Anterior/posterior TZ ratio	0.6 (0.3–1.5)	0.294	0.7 (0.4–1.3)	0.265

Bold numbers indicate statistical significance.