Factors | Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|
 | n | Medium RFS months (95% CI) | p value | p value (HR, 95% CI) |
Age (years) | Â | Â | Â | Â |
   < 65 | 173 | 10.0 (8.4-11.6) | 0.103 | - |
   ≥65 | 106 | 16.9 (9.9-24.0) |  |  |
Gender | Â | Â | Â | Â |
   Male | 177 | 12.0 (7.7-16.3) | 0.021 | 0.134 |
   Female | 102 | 11.0 (9.0-13.0) |  |  |
Primary tumor | Â | Â | Â | Â |
   Colon | 156 | 12.9 (8.5-17.2) | 0.234 | - |
   Rectum | 123 | 10.0 (8.5-11.5) |  |  |
Serum CEA (mg/dL) | Â | Â | Â | Â |
   < 200 | 198 | 12.0 (10.6-13.4) | 0.567 | - |
   ≥200 | 72 | 10.0 (7.3-12.7) |  |  |
Metastatic type | Â | Â | Â | Â |
   Synchronous | 179 | 10.8 (9.3-12.3) | 0.002 | 0.014 |
   Metachronous | 100 | 15.0 (9.1-20.9) |  | 1.5 (1.1-2.0) |
Tumor number | Â | Â | Â | Â |
   Solitary | 181 | 14.0 (8.9-19.1) | 0.001 | 0.028 |
   Multiple | 98 | 10.0 (7.8-8.7) |  | 1.4 (1.0-1.9) |
Maximum tumor size | Â | Â | Â | Â |
   < 5 cm | 230 | 12.0 (10.0-14.0) | 0.420 | - |
   ≥5 cm | 49 | 10.0 (6.9-13.1) |  |  |
Extent of liver resection | Â | Â | Â | Â |
   < 3 segments | 202 | 12.0 (9.3-14.7) | 0.235 | - |
   ≥3 segments | 77 | 10.0 (7.9-12.1) |  |  |
Resection margin (cm) | Â | Â | Â | Â |
   < 0.5 | 147 | 10.0 (8.5-11.5) | 0.019 | 0.073 |
   ≥0.5 | 132 | 14.5 (9.1-19.9) |  |  |
Histologic grade | Â | Â | Â | Â |
   Low grade | 261 | 12.0 (9.3-14.7) | 0.184 | - |
   high grade | 18 | 5.3 (1.8-8.8) |  |  |