Timo Soeterik

97 Nerve Sparing and Risk of Positive Margins SUPPLEMENTAL SECTION SUPPLEMENTARY TABLE S1. Baseline characteristics on patient level N (%), mean (SD) No. of patients 2574 Age 65.0 (5.9) Preoperative PSA (ng/ml) 10.6 (10) PSA density (ng/ml/ml) 0.26 (0.19) Hospital MHG HGT SAH CWH 261 (10) 515 (20) 746 (29) 1052 (41) Clinical T stage T1a/b/c T2/T2a T2b T2c T3 Unknown 1533 (60) 686 (27) 133 (5) 66 (3) 134 (5) 22 (1) Preoperative MRI Yes No 2210 (86) 364 (14) Radiological T stage (N=2210) T0 T2a T2b T2c T3a T3b T4 Unknown 212 (10) 1017 (46) 102 (5) 278 (13) 466 (21) 96 (4) 5 (0) 34 (2) Biopsy type TRUS-guided systematic MRI-guided TRUS + MRI-guided Incidental Unknown 1799 (70) 265 (10) 496 (19) 9 (0) 5 (0) Highest biopsy ISUP Grade 1 2 3 4 5 Unknown 887 (35) 875 (34) 370 (14) 276 (11) 148 (6) 18 (0) SD = standard deviation, PSA = prostate-specific antigen, MRI = magnetic resonance imaging, TRUS = transrectal ultrasonography, MHG = Martini Hospital Groningen, HGT = Hospital Group Twente, SAH = St. Antonius Hospital Nieuwegein, CWH = Canisius Wilhelmina Hospital Nijmegen. 5