Table 3.
Results of univariate and multivariate logistic regression analyses.
| Variables | Univariate logistic regression | Multivariate logistic regression | ||
|---|---|---|---|---|
| OR (95%CI) | P value | OR (95%CI) | P value | |
| Age | 0.964 (0.922, 1.008) | 0.106 | NA | NA |
| Gender | 1.997 (0.777, 5.135) | 0.151 | NA | NA |
| CEA | 3.725 (1.468, 9.452) | 0.006* | 2.749 (1.225, 6.173) | 0.014* |
| CA19-9 | 0.572 (0.149, 2.190) | 0.415 | NA | NA |
| DIS | 1.013 (0.885, 1.159) | 0.854 | NA | NA |
| CRM status | 1.623 (0.596, 4.418) | 0.343 | NA | NA |
| mrEMVI status | 1.377 (0.476, 3.988) | 0.555 | NA | NA |
| Tumor stage | 5.446 (1.300, 22.814) | 0.020* | 5.956 (1.633, 21.719) | 0.007* |
| Lymph node | 0.779 (0.260, 2.330) | 0.654 | NA | NA |
| Rad-score | 2.758 (1.878, 4.051) | 0.000* | 2.512 (1.808, 3.491) | 0.000 |
CEA, carcinoembryonic antigen; CA19-9, carbohydrate antigen 19-9; DIS, the distance from the end of the convex edge of the tumor to the edge of the anus; CRM, circumferential resection margin; mrEMVI, MRI-based extramural vascular invasion; OR, odds ratio; CI, confidence interval. *P < 0.05; NA, not available.