Table 3.

Multiple regression analysis of the relationship between form of treatment and other factors and improvement of the Q _max and voiding and storage sub-scores of the IPSS

Variable	Q max, ml/s	Voiding sub-score, points	Storage sub-score, points
Age, per year	−0.083 ± 0.022	0.003 ± 0.014	0.035 ± 0.010
	<0.001	0.826	<0.001
Basal value	−0.452 ± 0.037	−0.675 ± 0.025	−0.590 ± 0.023
	<0.001	<0.001	<0.001
Watchful waiting	−0.259 ± 0.461	0.770 ± 0.295	0.303 ± 0.208
	0.574	0.009	0.145
TUMT	4.222 ± 0.480	−3.060 ± 0.305	−1.301 ± 0.214
	<0.001	<0.001	<0.001
TURP	12.348 ± 0.569	−5.436 ± 0.357	−2.665 ± 0.250
	<0.001	<0.001	<0.001

Data are mean ± SEM of the unstandardized regression coefficient and the corresponding p-values. Effects of treatment forms are expressed relative to those of the reference group (α-blocker treatment). This means e.g. that all other factors being equal, 1 year of age explains an improvement of the storage sub-score by 0.035 points, one point of the voiding sub-score at baseline explains an improvement of this sub-score by 0.675 points, and that TURP improves the storage sub-score by 2.665 points more than α-blocker treatment