Table 1.
Patient characteristics
| Site 1 | Site 2 | Site 3 | Overall | |||||
|---|---|---|---|---|---|---|---|---|
| (N = 33) | (N = 41) | (N = 25) | (N = 99) | |||||
| Age | ||||||||
| Median [min, max] | 74 | [49, 83] | 68 | [50, 82] | 78 | [58, 87] | 72 | [49, 87] |
| ISUP grade after surgery | ||||||||
| 1 | 4 | (12.1%) | 0 | (0%) | 2 | (8%) | 6 | (6.1%) |
| 2 | 10 | (30.3%) | 2 | (4.9%) | 8 | (32%) | 20 | (20.2%) |
| 3 | 6 | (18.2%) | 24 | (58.5%) | 9 | (36%) | 39 | (39.4%) |
| 4 | 7 | (21.2%) | 6 | (14.6%) | 4 | (16%) | 17 | (17.2%) |
| 5 | 6 | (18.2%) | 9 | (22%) | 2 | (8%) | 17 | (17.2%) |
| rcN status | ||||||||
| 0 | 22 | (66.7%) | 15 | (36.6%) | 19 | (76%) | 56 | (56.6%) |
| 1 | 11 | (33.3%) | 26 | (63.4%) | 6 | (24%) | 43 | (43.4%) |
| PSA initial | ||||||||
| Median [min, max] | 10 | [3.56, 190] | 9.73 | [1.01, 80] | 8.9 | [4.24, 43] | 9.73 | [1.01, 190] |
| Max PSA before sRT | ||||||||
| Median [min, max] | 1.47 | [0.26, 10.1] | 0.54 | [0, 7.74] | 2.1 | [0.21, 14.8] | 1.07 | [0, 14.8] |
| RT dose to prostatic fossa/local recurrence (α/β = 1.6 Gy) | ||||||||
| < 0 Gy | 9 | (27.3%) | 16 | (39.0%) | 19 | (76.0%) | 44 | (44.4%) |
| ≥70 Gy | 22 | (66.7%) | 3 | (7.3%) | 1 | (4.0%) | 26 | (26.3%) |
| ≥72 Gy | 2 | (6.1%) | 19 | (46.3%) | 5 | (20%) | 26 | (26.3%) |
| Missing | 3 | (7.3%) | 3 | (3.0%) | ||||
| ADT | ||||||||
| Yes | 24 | (72.7%) | 17 | (41.5%) | 6 | (24%) | 47 | (47.5%) |
| No | 9 | (27.3%) | 24 | (58.5%) | 19 | (76%) | 52 | (52.5%) |
| Duration of ADT >12 months | ||||||||
| Yes | 6 | (18.2%) | 8 | (19.5%) | 1 | (4%) | 15 | (15.2%) |
| No | 18 | (54.5%) | 9 | (22%) | 5 | (20%) | 32 | (32.3%) |
| Missing | 9 | (27.3%) | 24 | (58.5%) | 19 | (76%) | 52 | (52.5%) |
| Time to biochemical recurrence in months | ||||||||
| Median [min, max] | 20 | [3, 54] | 21 | [4, 64] | 25 | [6, 56] | 22 | [3, 64] |
| Biochemical recurrence | ||||||||
| Yes | 10 | (30.3%) | 9 | (22%) | 7 | (28%) | 26 | (26.3%) |
| No | 23 | (69.7%) | 32 | (78%) | 18 | (72%) | 73 | (73.7%) |