Table 5. Linear regression model for parameters association with positive surgical margin finding.

Univariate analysis
	Group 1 – Laparoscopic		Group 2 – Open
Parameter	Coefficient	P.value	Coefficient	P value
Preoperative PSA	0.0469	0.0006	0.0195	0.2561
pT stage	0.9772	<0.0001	0.9622	<0.0001
Gleason score	0.9687	<0.0001	0.1705	0.0279
NS procedure	-0.0230	0.7728	-0.0296	0.7160
Multivariate analysis
Parameter	Parameter estimates	Std.Error	T value	Pr(>|t|)
pT stage	1.0771	0.1750	6.1523	<0.0001