Table 5.
Comparison of surgical outcomes in chronological groups
| Parameter assessed | Group 01 | Group 02 | Group 03 | Group 04 | P value |
|---|---|---|---|---|---|
| Numbers | 49 | 48 | 46 | 31 | |
| Mean blood loss (ml) | 276 | 257 | 158 | 291 | 0.173 |
| Mean nodal yield (n) | 14.7 | 13.8 | 12.7 | 13.6 | 0.799 |
| CRM positivity (n) | 2 | 5 | 2 | 0 | 0.290 |
| DRM positivity (n) | 0` | 0 | 1 | 0 | 0.466 |
| Anastomotic leak (n) | 1 | 2 | 0 | 3 | 0.109 |
| Morbidity | |||||
| Grade I | 2 | 9 | 5 | 4 | 0.313 |
| Grade II | 4 | 0 | 3 | 1 | |
| Grade IIIa | 0 | 0 | 1 | 1 | |
| Grade IIIb | 2 | 1 | 3 | 1 | |
| Grade IVa | 0 | 1 | 0 | 2 | |
| Grade IVb | 1 | 0 | 0 | 0 | |
| Grade V | 1 | 0 | 0 | 0 | |
| Grade 0 | 39 | 37 | 34 | 22 | |
CRM circumferential resection margin, DRM distal resection margin