Table 4.
Univariate and multivariate analysis for disease free survival
| Covariates | Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|
| HR | 95% CI | p value | HR | 95% CI | p value | |
| Age | 1.026 | (0.995–1.059) | 0.096 | |||
| Female | Ref | |||||
| Male | 1.4503 | (0.8437–2.493) | 0.179 | |||
| Colon primary | Ref | |||||
| Rectal primary | 0.7183 | (0.2847–1.812) | 0.484 | |||
| Classic adenocarcinoma | Ref | |||||
| Mucinous adenocarcinoma | 1.1205 | (0.5979–2.1) | 0.723 | |||
| Grade I (histology) | Ref | |||||
| Grade II (histology) | 0.90843 | (0.4726–1.746) | 0.773 | |||
| Grade III (histology) | 0.73676 | (0.3409–1.592) | 0.437 | |||
| Presenting stage I–III | Ref | |||||
| Presenting stage IV | 1.4028 | (0.8112–2.426) | 0.226 | |||
| Metachronous | Ref | |||||
| Synchronous | 1.2770 | (0.7426–2.196) | 0.377 | |||
| Peri-op chemo | 0.419 | (0.1873–0.938) | 0.034 | 0.448 | (0.1968–1.022) | 0.056 |
| Intra-op IV chemo | 1.7762 | (0.9555–3.302) | 0.069 | |||
| PCI (continuous) | 1.101 | (1.059–1.145) | 1.09e−06 | 1.100 | (1.047–1.156) | 0.0001 |
| Operative time (hours) | 1.199 | (1.068–1.346) | 0.002 | 1.014 | (0.875–1.175) | 0.856 |
| Blood loss (100 ml) | 1.0177 | (0.9875–1.047) | 0.265 | |||
| No complications | Ref | |||||
| Grade I (complication) | 1.072 | (0.510–1.996) | 0.838 | |||
| Grade II (complication) | 1.105 | (0.472–2.576) | 0.817 | |||
| Grade III (complication) | 1.936 | (0.739–5.208) | 0.185 | |||
| Grade IV (complication) | 1.849 | (0.616–1.795) | 0.260 | |||
Boldface font indicate statistically significant p values of less than 0.05