Table 2.
Univariate and multivariate analyses for overall survival in the training cohort
| Variables |
Univariate analysis
|
P value
|
Multivariate analysis
|
P value
|
|
|
HR (95%CI)
|
HR (95%CI)
|
||||
| Gender | Male | 1 | - | - | - |
| Female | 5.755 (0.660, 50.196) | 0.033 | - | - | |
| Age | ≥ 75 | 1.745 (0.198, 15.416) | 0.064 | - | - |
| < 75 | 1 | - | - | - | |
| Obstruction | Yes | 0.785 (0.035, 17.665) | 0.014 | - | - |
| No | 1 | - | - | - | |
| CEA (ng/mL) | > 5 | 1.576 (0.497, 4.994) | 0.434 | - | - |
| ≤ 5 | 1 | - | - | - | |
| CA199 (U/mL) | > 37 | 20.20 (1.881, 216.893) | 0.002 | 6.315 (1.520, 26.243) | 0.011 |
| ≤ 37 | 1 | - | 1 | - | |
| Surgical procedure | Laparotomy | 1.586 (0.130, 19.331) | 0.012 | - | - |
| Laparoscopy | 1 | - | - | - | |
| Right hemicolon | Yes | 2.873 (0.775, 10.656) | 0.016 | 5.236 (1.229, 22.308) | 0.025 |
| No | 1 | - | 1 | - | |
| Enterostomy | Yes | 6.086 (1.949, 19.007) | 0.000 | 13.302 (3.392, 52.171) | 0.000 |
| No | 1 | - | 1 | - | |
| Tumor size (cm) | ≥ 6.8 | 2.252 (0.376, 13.489) | 0.004 | - | - |
| < 6.8 | 1 | - | - | - | |
| Poor differentiated | Yes | 4.311 (1.341, 13.856) | 0.008 | - | - |
| No | 1 | - | - | - | |
| T stage | T4a | 1 | - | 1 | - |
| T4b | 8.241 (2.500, 27.158) | 0.000 | 10.888 (2.809, 42.199) | 0.001 | |
| Lymph node count | ≥ 12 | 1 | - | - | - |
| < 12 | 1.143 (0.250, 5.225) | 0.863 | - | - | |
| Regular review | Yes | 1 | - | 1 | - |
| No | 5.676 (1.534, 21.000) | 0.003 | 4.626 (1.075, 19.905) | 0.040 |
CEA: Carcinoembryonic antigen; CA199: Carbohydrate antigen 199.