Variables | Number (%) | KRAS | Univariate | Multivariate | |||
---|---|---|---|---|---|---|---|
Mutant (%) | Wild-type (%) | Odds ratio (95Â % CI) | p value | Odds ratio (95Â % CI) | p value | ||
Gender | |||||||
Male | 657 (59.78) | 233 (35.46) | 424 (64.54) | Ref. | Â | Ref. | Â |
Female | 442 (40.22) | 204 (46.15) | 238 (53.85) | 1.56 (1.22–1.99) | <0.001 | 1.64 (1.26–2.12) | <0.001 |
Age (years) | |||||||
≤50 | 232 (21.11) | 41 (17.67) | 191 (82.33) | Ref. |  | Ref. |  |
>50 | 867 (78.89) | 396 (45.67) | 471 (54.33) | 3.92 (2.72–5.63) | <0.001 | 4.17 (2.85–6.10) | <0.001 |
Sub-localization | |||||||
Rectum | 371 (33.76) | 139 (37.47) | 232 (62.53) | Ref. | Â | Ref. | Â |
Prioximal colon | 373 (33.94) | 155 (41.55) | 218 (58.45) | 1.19 (0.88–1.59) | 0.254 | 0.85 (0.62–1.17) | 0.333 |
Distal colon | 355 (32.30) | 143 (40.28) | 212 (59.72) | 1.13 (0.84–1.52) | 0.437 | 0.95 (0.69–1.31) | 0.754 |
Dukes’ stage | |||||||
A + B | 614 (56.23) | 244 (39.74) | 370 (60.26) | Ref. |  | Ref. |  |
C + D | 478 (43.77) | 192 (40.17) | 286 (59.83) | 1.02 (0.80–1.30) | 0.886 | 0.99 (0.77–1.29) | 0.963 |
Pathology | |||||||
Non-ADC | 54 (4.91) | 10 (18.52) | 44 (81.48) | Ref. | Â | Ref. | Â |
ADC | 1045 (95.09) | 427 (40.86) | 618 (59.14) | 3.04 (1.51–6.11) | 0.002 | 2.41 (1.12–5.17) | 0.024 |
Differentiation | |||||||
Well | 78 (7.10) | 23 (29.49) | 55 (70.51) | Ref. | Â | Ref. | Â |
Moderate | 752 (68.43) | 310 (41.22) | 442 (58.78) | 1.68 (1.01–2.79) | 0.046 | 1.10 (0.62–1.96) | 0.742 |
Poor | 256 (23.29) | 101 (39.45) | 155 (60.55) | 1.56 (0.90–2.69) | 0.112 | 1.24 (0.66–2.30) | 0.503 |
Unknown | 13 (1.18) | 3 (23.08) | 10 (76.92) | 0.72 (0.18–2.85) | 0.637 | 0.53 (0.13–2.24) | 0.388 |