Table 2.
Surgical results and tumor outcomes
| Variable |
Interval ≤ 9 wk |
Interval > 9 wk |
P value |
| (group A, n = 139) | (group B, n = 92) | ||
| Surgical procedure | |||
| Miles (n, %) | 55 (39.6) | 45 (48.9) | 0.161 |
| Dixon (n, %) | 73 (52.5) | 40 (43.5) | 0.179 |
| Hartmann (n, %) | 11 (7.9) | 7 (7.6) | 0.933 |
| Operative time (min, mean ± SD) | 194.5 ± 65.2 | 222.2 ± 67.8 | 0.001 |
| Estimated blood loss (mL, mean ± SD) | 68.0 ± 92.1 | 100.9 ± 133.9 | 0.007 |
| Postoperative complications | 7 (5) | 5 (5.4) | 0.894 |
| Hemorrhage, n (%) | 1 (0.7) | 1 (1.1) | |
| Anastomotic leakage, n (%) | 5 (3.6) | 2 (2.2) | |
| Ileus, n (%) | 2 (1.4) | 0 (0) | |
| Reoperation, n (%) | 3 (2.2) | 1 (1.1) | |
| Cardiovascular, n (%) | 0 (0) | 1 (1.1) | |
| Urinary retention, n (%) | 1 (0.7) | 2 (2.2) | |
| Exhaust, d (mean ± SD) | 3.6 ± 1.5 | 3.9 ± 1.5 | 0.148 |
| Defecation, d (mean ± SD) | 4.7 ± 1.7 | 5.2 ± 2.0 | 0.249 |
| Micturition, d (mean ± SD) | 4.5 ± 1.4 | 4.4 ± 1.0 | 0.614 |
| Degree of differentiation, n (%) | 0.475 | ||
| Low and low-moderate grades | 22 (15.8) | 10 (10.9) | |
| Moderate, moderate-high, and high grades | 114 (82) | 79 (85.9) | |
| Signet-ring and mucinous adenocarcinoma | 3 (2.2) | 3 (3.3) | |
| ypT, n (%) | 0.009 | ||
| 1 | 3 (2.2) | 2 (2.2) | |
| 2 | 29 (20.9) | 19 (20.7) | |
| 3 | 82 (59) | 39 (42.4) | |
| 4 | 10 (7.2) | 7 (7.6) | |
| ypN, n (%) | 0.014 | ||
| 0 | 68 (48.9) | 60 (65.2) | |
| 1 | 50 (36) | 24 (26.1) | |
| 2 | 21 (15.1) | 8 (8.7) | |
| pCR | 15 (10.8) | 25 (27.2) | 0.001 |
| Total lymph nodes | 19.0 ± 8.8 | 15.7 ± 8.7 | 0.001 |
| Positive lymph nodes | 1.6 ± 3.2 | 0.8 ± 1.7 | 0.045 |
pCR: Pathologic complete response.