Table 1.

Patient characteristics. Data are median (interquartile range) or frequency (percentage).

	N=1406
Preoperative Prostate Specific Antigen (ng/ml)	5.53 (4.32, 7.68)
Percentage of positive biopsy cores	33 (17, 50)
Clinical stage ≥ T2 (n=1315)	518 (39%)
Biopsy Gleason grade
≤ 6	887 (63%)
7	422 (30%)
≥ 8	97 (7%)
Pathology Gleason grade (n=1394)
≤ 6	641 (46%)
7	665 (47%)
≥ 8	88 (6%)
Extracapsular extension (n=1399)	353 (25%)
Seminal vesicle invasion	90 (6%)
Positive surgical margins (n=1403)	220 (16%)
Lymph node involvement (n=1264)	50 (4%)