Table 3. Study cohort characteristics, n=423.
| Mean | s.d. | |
|---|---|---|
| Age | ||
| 72.45 | 10.78 | |
| Frequency | Percentage | |
| Sex | ||
| Male | 235 | 55.6 |
| Female | 188 | 44.4 |
| Stage | ||
| T1 | 22 | 5.2 |
| T2 | 76 | 17.9 |
| T3 | 249 | 58.9 |
| T4 | 64 | 15.2 |
| Not available | 12 | 2.8 |
| Nodal | ||
| N0 | 214 | 50.6 |
| N1 | 100 | 23.6 |
| N2 | 95 | 22.5 |
| Not available | 14 | 3.3 |
| Metastasis | ||
| M0 | 368 | 87 |
| M1 | 40 | 9.5 |
| Not available | 15 | 3.5 |
| Grade | ||
| G1 | 4 | 0.9 |
| G2 | 303 | 71.6 |
| G3 | 109 | 25.8 |
| Not available | 7 | 1.7 |
| R status | ||
| R0 | 377 | 89.1 |
| R1 | 22 | 5.2 |
| R2 | 2 | 0.5 |
| Not available | 22 | 5.2 |
| Localization | ||
| Appendix | 1 | 0.2 |
| Coecum | 47 | 11.1 |
| Ascendens | 91 | 21.5 |
| Flexura dextra | 7 | 1.7 |
| Transversum | 29 | 6.9 |
| Flexura sinistra | 7 | 1.7 |
| Descendens | 18 | 4.3 |
| Sigma | 76 | 18 |
| Rectum | 101 | 23.9 |
| Rectosigmoid | 23 | 5.4 |
| Multifocal | 3 | 0.7 |
| Not available | 20 | 4.6 |
| KRAS status | ||
| WT | 327 | 77.3 |
| MUT | 53 | 12.5 |
| Not available | 43 | 10.2 |
| BRAF status | ||
| WT | 53 | 12.5 |
| MUT | 5 | 1.2 |
| Not available | 365 | 86.3 |
| PI3K status | ||
| WT | 15 | 3.6 |
| MUT | 0 | 0 |
| Not available | 408 | 96.4 |
| MSI status | ||
| MSI-H | 2 | 0.5 |
| MSI-L | 3 | 0.7 |
| MSS | 4 | 0.9 |
| Not available | 414 | 97.9 |
Abbreviation: MSI: microsatellite instability.