Prognostic Factor | Group | OS (%) | Univariate | Multivariate | RR | 95% CI |
---|---|---|---|---|---|---|
Age (years) | < 57 | 63 | 0.247 | − |  |  |
 | ≥ 57 | 48 |  |  |  |  |
Duke stage | A or B | 68 | 0.297 | − |  |  |
 | C | 53 |  |  |  |  |
Rectal lateral margin | negative | 59 | 0.078 | 0.029 | 2.2 | 1.1-4.5 |
 | positive | 37 |  |  |  |  |
Initial CEA (ng/ml) | < 100 | 59 | 0.081 | 0.47 | 1.3 | 0.6-2.7 |
 | ≥ 100 | 33 |  |  |  |  |
Liver resection | no | 27 | 0.000 | 0.0 | 2.3 | 0.2-0.6 |
 | yes | 76 |  |  |  |  |
Adjuvant pelvic RT | no | 49 | 0.224 | - | Â | Â |
 | yes | 70 |  |  |  |  |