Table 1 Characteristics of patients
Characteristics | Â | Total | Non-Chemotherapy | Chemotherapy | P valuea |
|---|---|---|---|---|---|
Sex | Male | 431 (60.9%) | 156 (59.8%) | 275 (61.5%) | 0.645 |
Female | 277 (39.1%) | 105 (40.2%) | 172 (38.5%) | Â | |
Age (years) | ≤55 | 163 (23.0%) | 32 (12.3%) | 131 (29.3%) | < 0.001 |
56–60 | 125 (17.7%) | 23 (8.8%) | 102 (22.8%) |  | |
61–65 | 146 (20.6%) | 40 (15.3%) | 106 (23.7%) |  | |
66–70 | 103 (14.5%) | 44 (16.9%) | 59 (13.2%) |  | |
> 70 | 171 (24.2%) | 122 (46.7%) | 49 (11.0%) |  | |
Location | Rectum | 354 (50.0%) | 119 (45.6%) | 235 (52.6%) | 0.073 |
Colon | 354 (50.0%) | 142 (54.4%) | 212 (47.4%) | Â | |
Size (cm) | ≤5.0 | 395 (55.8%) | 144 (55.2%) | 251 (56.2%) | 0.954 |
> 5.0 | 303 (42.8%) | 113 (43.3%) | 190 (42.5%) |  | |
Unknown | 10 (1.4%) | 4 (1.5%) | 6 (1.3%) | Â | |
Differentiation | Well-moderate | 654 (92.4%) | 234 (89.7%) | 420 (94.0%) | 0.038 |
Poor | 52 (7.3%) | 25 (9.6%) | 27 (6.0%) | Â | |
Unknown | 2 (0.3%) | 2 (0.8%) | 0 (0) | Â | |
T category | 3 | 266 (37.6%) | 120 (46.0%) | 146 (32.7%) | < 0.001 |
4 | 442 (62.4%) | 141 (54.0%) | 301 (67.3%) | Â | |
CEAb (ng/mL) | < 5 | 388 (54.8%) | 135 (51.7%) | 253 (56.6%) | 0.058 |
≥5 | 237 (33.5%) | 101 (38.7%) | 136 (30.4%) |  | |
Unknown | 83 (11.7%) | 25 (9.6%) | 58 (13.0%) | Â | |
Examined lymph nodes | < 12 | 186 (26.3%) | 75 (28.7%) | 111 (24.8%) | 0.255 |
≥12 | 522 (73.7%) | 186 (71.3%) | 336 (75.2%) |  | |
Vessel carcinoma embolus | Negative | 683 (96.5%) | 251 (96.2%) | 432 (96.6%) | 0.741 |
Positive | 25 (3.5%) | 10 (3.8%) | 15 (3.4%) | Â | |
CCVDc | Negative | 616 (87.0%) | 217 (83.1%) | 399 (89.3%) | 0.019 |
Positive | 92 (13.0%) | 44 (16.9%) | 48 (10.7%) | Â | |
PLRd | ≤130 | 371 (52.4%) | 134 (51.3%) | 237 (53.0%) | 0.666 |
> 130 | 337 (47.6%) | 127 (48.7%) | 210 (47.0%) |  |