Table 1 Clinical characteristics of enrolled patients
|  |  | sur05 (n = 90) | sur10 (n = 100) | P value |
|---|---|---|---|---|
Cancer type (%) | Rectum cancer | Rectum cancer | Colon cancer | Â |
Age (%) |  < 65 | 41 (45.6) | 38 (38.4) | 0.395 |
|  | ≥65 | 49 (54.4) | 61 (61.6) |  |
Gender (%) | Female | 42 (46.7) | 41 (41.4) | 0.562 |
| Â | Male | 48 (53.3) | 58 (58.6) | Â |
Location (%) | Right colon | 0 (0.0) | 50 (54.3) | <0.001 |
| Â | Left colon | 0 (0.0) | 42 (45.7) | Â |
| Â | Rectum | 90 (100.0) | 0 (0.0) | Â |
Maximum diameter (%) |  < 5 | 45 (50.0) | 36 (36.4) | 0.081 |
|  | ≥5 | 45 (50.0) | 63 (63.6) |  |
T (%) | T1 | 2 (2.2) | 0 (0.0) | <0.001 |
| Â | T2 | 10 (11.2) | 4 (4.0) | Â |
| Â | T3 | 76 (85.4) | 64 (64.0) | Â |
| Â | T4 | 1 (1.1) | 32 (32.0) | Â |
N (%) | N0 | 54 (60.0) | 52 (52.0) | 0.384 |
| Â | N1 | 24 (26.7) | 36 (36.0) | Â |
| Â | N2 | 12 (13.3) | 12 (12.0) | Â |
M (%) | M0 | 89 (98.9) | 95 (95.0) | 0.265 |
| Â | M1 | 1 (1.1) | 5 (5.0) | Â |
AJCC7 (%) | AJCC1 | 12 (13.3) | 4 (4.0) | 0.061 |
| Â | AJCC2 | 41 (45.6) | 47 (47.0) | Â |
| Â | AJCC3 | 36 (40.0) | 44 (44.0) | Â |
| Â | AJCC4 | 1 (1.1) | 5 (5.0) | Â |
OS event (%) | 0 | 49 (54.4) | 48 (48.0) | 0.458 |
| Â | 1 | 41 (45.6) | 52 (52.0) | Â |