Table 2.
Univariate analysis for tumor recurrence
| Variable | Hazard ratio | 95 % CI | p value* |
|---|---|---|---|
| Age (median) | 0.716 | ||
| ≤69 | 1.000 | ||
| >69 | 0.839 | 0.310–2.268 | |
| Gender | 0.142 | ||
| Male | 1.000 | ||
| Female | 0.426 | 0.152–1.190 | |
| Type of surgery | 0.010 | ||
| Low anterior resection | 1.000 | ||
| Abdominoperineal resection | 3.140 | 0.919–10.725 | |
| Tumor location | 0.710 | ||
| Upper rectum | 1.000 | ||
| Middle rectum | 1.267 | 0.381–4.213 | |
| Low rectum | 1.716 | 0.419–7.026 | |
| Grade of differentiation | 0.936 | ||
| G1 | 1.000 | ||
| G2 | 1.933 | 0.416–3.423 | |
| G3 | 1.119 | 0.137–9.137 | |
| Histologic type | 0.299 | ||
| Adenocarcinoma | 1.000 | ||
| Adenocarcinoma with mucinous features | 0.381 | 0.096–1.514 | |
| Depth of tumor invasion | 0.925 | ||
| T3 | 1.000 | ||
| T4a | 0.919 | 0.316–2.673 | |
| T4b | 0.745 | 0.172–3.223 | |
| Tumor size | 0.329 | ||
| ≤4 cm | 1.000 | ||
| >4 cm | 0.594 | 0.214–1.651 |
95 % CI confidence interval
*log-rank test