Table 2. Cox regression of BCR free survival.

	Hazard Ratio (95%CI) for BCR or Death	P Value
Multivariate analysis before matching
Anaesthesia with TEA vs. Anaesthesia with iv Analgesia	0.91 (0.62-1.34)	0.6414
Age (yrs)	1.01 (0.98-1.05)	0.4133
ASA Classification	1.00 (0.73-1.38)	0.9830
Preoperative PSA (ng.ml-1)	1.02 (1.01-1.02)	<.0001
Lymph nodes
Positive vs. Negative	1.66 (1.03-2.67)	0.0372
Specimen Gleason score*	1.24 (1.06-1.46)	0.0073
Fentanyl (mg)	1.67 (0.82-3.39)	0.1562
Transfusion
Yes vs. No	0.68 (0.40-1.16)	0.1540
Surgical margin
Positive vs. Negative	1.25 (0.84-1.86)	0.2734
Univariate analysis after matching
Anaesthesia with TEA vs. Anaesthesia with iv Analgesia	1.00 (0.69-1.47)	0.9851