Characteristic | No upgrade (n = 13,109) | Upgrade (n = 4489) | p-value |
---|---|---|---|
Age (years) | 63.2 (6.56) | 63.3 (6.44) | 0.159 |
Preoperative PSA (ng/ml) | 9.81 (7.93) | 10.8 (8.94) | < 0.001 |
Preoperative biopsy ISUP Grade Group | < 0.001 | ||
 1 | 1550 (39.6%) | 2364 (60.4%) |  |
 2 | 6811 (81.8%) | 1517 (18.2%) |  |
 3 | 2572 (88.9%) | 321 (11.1%) |  |
 4 | 1213 (85.0%) | 214 (15.0%) |  |
 5 | 963 (93.0%) | 73 (7.05%) |  |
Preoperative clinical stage | < 0.001 | ||
 T1 | 3957 (72.8%) | 1478 (27.2%) |  |
 T2 | 6350 (76.4%) | 1961 (23.6%) |  |
 T3 | 2792 (72.7%) | 1047 (27.3%) |  |
 T4 | 10 (76.9%) | 3 (23.1%) |  |
Preoperative D’Amico risk group | < 0.001 | ||
 Low risk | 782 (44.3%) | 984 (55.7%) |  |
 Intermediate risk | 5307 (80.9%) | 1256 (19.1%) |  |
 High risk | 7020 (75.7%) | 2249 (24.3%) |  |
Year of surgery | < 0.001 | ||
 2011 | 695 (69.4%) | 306 (30.6%) |  |
 2012 | 848 (73.2%) | 311 (26.8%) |  |
 2013 | 1602 (70.9%) | 657 (29.1%) |  |
 2014 | 2835 (74.9%) | 948 (25.1%) |  |
 2015 | 3420 (74.9%) | 1146 (25.1%) |  |
 2016 | 3709 (76.8%) | 1121 (23.2%) |  |
Region | < 0.001 | ||
 A | 68 (86.1%) | 11 (13.9%) |  |
 B | 544 (77.6%) | 157 (22.4%) |  |
 C | 1239 (75.0%) | 414 (25.0%) |  |
 D | 1643 (79.0%) | 438 (21.0%) |  |
 E | 552 (78.2%) | 154 (21.8%) |  |
 F | 1536 (73.7%) | 548 (26.3%) |  |
 G | 1020 (77.6%) | 295 (22.4%) |  |
 H | 18 (62.1%) | 11 (37.9%) |  |
 I | 49 (73.1%) | 18 (26.9%) |  |
 J | 1553 (74.2%) | 540 (25.8%) |  |
 K | 1382 (73.3%) | 503 (26.7%) |  |
 L | 1301 (74.9%) | 435 (25.1%) |  |
 M | 505 (67.8%) | 240 (32.2%) |  |
 N | 1246 (69.3%) | 552 (30.7%) |  |
 O | 226 (69.8%) | 98 (30.2%) |  |
 P | 227 (75.2%) | 75 (24.8%) |  |