Timo Soeterik

110 CHAPTER 6 TABLE 2. Baseline characteristics of included cases (N=792) Mean (min/max) or N (%) Preoperative PSA (ng/ml) 9.3 (0.5 – 20) ISUP biopsy grade ISUP 1 ISUP 2 ISUP 3 ISUP 4+5 271 (34) 274 (35) 104 (13) 143 (18) Percent highest biopsy tumour involvement >50% ≤50% 352 (44) 440 (56) EPE on MRI Present Absent 160 (20) 632 (80) EPE on pathological evaluation Present Absent 250 (32) 542 (68) FIGURE 2 AND TABLE 3 - Calibration plot and table of the original Martini Nomogram Group Predicted risk (%) Patients (N) Mean predicted (%) Mean observed (%) 1 2 – 3 64 3 9 2 3 – 3 60 3 8 3 3 – 4 60 4 13 4 4 – 9 60 6 8 5 10 – 12 61 11 13 6 12 – 15 61 14 21 7 15 – 17 62 16 34 8 17 – 21 64 19 33 9 21 – 29 57 24 30 10 29 – 39 63 34 35 11 39 – 49 59 43 61 12 49 – 65 61 57 72 13 65 – 88 60 78 73