Urinary and sexual function changes in benign prostatic hyperplasia patients before and after transurethral columnar balloon dilatation of the prostate

Table 2 Pre- and postoperative changes in urinary symptoms between groups (mean ± SD)

Group	n	Qmax (mL/s)		RUV (mL)		IPSS scores (Score)
		Before therapy	Treatment for 3 mo	Before therapy	Treatment for 3 mo	Before therapy	Treatment for 3 mo
Study group	70	7.69 ± 2.05	20.51 ± 3.04a	98.5 ± 14.3	8.6 ± 2.7a	24.6 ±3 .5	5.1 ± 1.6a
Control group	70	8.20 ± 2.18	19.68 ± 2.88a	101.0 ± 16.5	9.0 ± 3.0a	24.2 ± 3.9	5.3 ± 1.9a
t value		-1.426	1.658	-0.958	-0.829	0.639	-0.674
P value		0.156	0.100	0.340	0.408	0.524	0.502

^aP < 0.05 vs data before treatment in the same group.

Qmax: maximum urine flow rate; RUV: residual urine volume; IPSS: International Prostate Symptom Score.