Table 3. Multivariate Cox regression analysis for overall survival in patients with different tumor locations.
| Terms | Hazard ratio | 95%CI | P |
|---|---|---|---|
| Age | 0.0001 | ||
| <50 | 1 | ||
| 50-59 | 1.036 | 0.851-1.261 | 0.724 |
| 60-69 | 1.507 | 1.249-1.819 | 0.0001 |
| 70-79 | 1.941 | 1.577-2.389 | 0.0001 |
| >80 | 2.616 | 1.717-3.985 | 0.0001 |
| Gender | |||
| Male | 1.215 | 1.056-1.398 | 0.006 |
| Female | 1 | ||
| Time duration | 0.0001 | ||
| 1970s | 1 | ||
| 1980s | 2.113 | 1.042-4.284 | 0.038 |
| 1990s | 1.438 | 0.716-2.886 | 0.307 |
| 2000s | 1.099 | 0.537-2.250 | 0.797 |
| Tumor locations | 0.0001 | ||
| Ascending | 0.668 | 0.529-0.844 | 0.001 |
| Transverse | 0.799 | 0.518-1.231 | 0.308 |
| Descending | 0.611 | 0.420-0.888 | 0.01 |
| Sigmoid | 0.725 | 0.589-0.891 | 0.002 |
| Rectum | 1 | ||
| Pathology grade | 0.001 | ||
| Grade I | 1 | ||
| Grade II | 1.050 | 0.831-1.327 | 0.682 |
| Grade III | 1.642 | 1.245-2.166 | 0.0001 |
| Examined lymph nodes | 0.0001 | ||
| N=0 | 1.667 | 1.274-2.182 | 0.001 |
| N<12 | 1.090 | 0.906-1.310 | 0.361 |
| N≥12 | 1 | ||
| T stage | 0.0001 | ||
| 1 | 1 | ||
| 2 | 1.368 | 0.845-2.214 | 0.202 |
| 3 | 1.935 | 1.205-3.107 | 0.006 |
| 4 | 2.267 | 1.403-3.662 | 0.001 |
| N stage | 0.0001 | ||
| 0 | 1 | ||
| 1 | 2.349 | 1.955-2.821 | 0.0001 |
| 2 | 3.391 | 2.727-4.216 | 0.0001 |