Table 2 Surgical data and tumor characteristics of patients with CRC classified by 5-mFI score
| Â | Â | Group 1 | Group 2 | Group 3 | Â |
|---|---|---|---|---|---|
Characteristic | n | 5-mFI: 0, 1 (n = 164), n (%) | 5-mFI: 2 (n = 91), n (%) | 5-mFI: ≥ 3 (n = 44), n (%) | p-value |
Surgical procedure | Â | Â | Â | Â | 0.028* |
 Laparoscopic | 237 | 136 (82.9%) | 73 (80.2%) | 28 (63.6%) |  |
 Open | 62 | 28 (17.1%) | 18 (19.8%) | 16 (36.4%) |  |
Blood loss (ml) | Â | Â | Â | Â | 0.426 |
  < 150 | 207 | 114 (69.5%) | 66 (72.5%) | 27 (61.4%) |  |
  ≥ 150 | 92 | 50 (30.5%) | 25 (27.5%) | 17 (38.6%) |  |
Operation time (min) | Â | Â | Â | Â | 0.524 |
  < 270 | 130 | 66 (40.2%) | 43 (47.3%) | 21 (47.7%) |  |
  ≥ 270 | 169 | 98 (59.8%) | 48 (52.7%) | 23 (52.3%) |  |
Tumor location | Â | Â | Â | Â | 0.316 |
 Right side (C–T) | 126 | 64 (39.0%) | 42 (46.2%) | 20 (45.5%) |  |
 Left side (D–Rs) | 122 | 66 (40.2%) | 36 (39.6%) | 20 (45.5%) |  |
 Rectum | 51 | 34 (20.8%) | 13 (14.2%) | 4 (9.0%) |  |
Tumor size (mm) | Â | Â | Â | Â | 0.486 |
  ≤ 40 | 169 | 90 (54.9%) | 56 (61.5%) | 23 (52.3%) |  |
  > 40 | 130 | 74 (45.1%) | 35 (38.5%) | 21 (47.7%) |  |
UICC stage | Â | Â | Â | Â | 0.038* |
 I/II | 191 | 115 (70.1%) | 53 (58.2%) | 23 (52.3%) |  |
 III | 108 | 49 (29.9%) | 38 (41.8%) | 21 (47.7%) |  |
Tumor differentiation | Â | Â | Â | Â | 0.392 |
 Well and moderate | 284 | 153 (93.3%) | 88 (96.7%) | 43 (97.7%) |  |
 Poor and mucin | 15 | 11 (6.7%) | 3 (3.3%) | 1 (2.3%) |  |
Tumor margin status | Â | Â | Â | Â | 0.379 |
 R0 | 275 | 154 (93.9%) | 81 (89.0%) | 40 (90.9%) |  |
 R1 | 24 | 10 (6.1%) | 10 (11.0%) | 4 (9.1%) |  |