Table 2.
Comparison of pathologic and short-term outcomes between the laparoscopy and open groups in matched cohorts
| Open (n = 683) (%) |
Laparoscopic (n = 683) (%) |
Total (n = 1366) (%) |
p-value | |
|---|---|---|---|---|
| Proximal margin | ||||
| Length, mean ± SD, cm | 20.8 ± 13.5 | 15.1 ± 9.7 | 18.0 ± 12.1 | < 0.001 |
| Tumor involvement, n(%) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Distal margin | ||||
| Length, mean ± SD, cm | 17.0 ± 9.1 | 15.2 ± 7.4 | 16.1 ± 8.4 | < 0.001 |
| Tumor involvement, n (%) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Radial margin | ||||
| Length, mean ± SD, mm | 5.2 ± 4.3 | 5.7 ± 4.1 | 5.5 ± 4.2 | 0.526 |
| Tumor involvement, n(%) | 38 (3.1) | 16 (1.6) | 54 (2.4) | |
| Total no. retrieved LNs, mean ± SD | 28.6 ± 13.9 | 25.7 ± 10.9 | 27.3 ± 12.8 | 0.005 |
| No. of positive LNs, mean ± SD | 1.5 ± 3.0 | 1.1 ± 2.4 | 1.3 ± 2.8 | 0.054 |
| No. of cases with fewer than 12 LNs, n (%) | 7 (0.6) | 2 (0.2) | 9 (0.4) | 0.199 |
| Total operation time (min) | 139 ± 61 | 165 ± 50 | 152 ± 58 | < 0.001 |
| Hospital days | 11.7 ± 4.7 | 9.3 ± 3.2 | 10.5 ± 4.2 | < 0.001 |
| Postop morbidity (+) | 146 (21.4) | 125 (18.3) | ||
| Type of morbidity | 271 (19.8) | 0.175 | ||
| Operation-related | 114 (16.7) | 102 (14.9) | 0.335 | |
| Operation-unrelated | 14 (2.0) | 13 (1.9) | ||
| Both | 18 (2.6) | 10 (1.5) | ||
| Surgical site infection | 50 (7.3) | 11 (1.6) | 61 (4.5) | < 0.001 |
| Ileus | 38 (5.6) | 43 (6.3) | 81 (5.9) | 0.647 |
| Anastomotic leakage | 11 (1.6) | 7 (1.0) | 18 (1.3) | 0.478 |
| Intra-abdominal fluid collection | 7 (1.0) | 5 (0.7) | 12 (0.9) | 0.773 |
| Intra-abdominal abscess | 11 (1.6) | 2 (0.3) | 13 (1.0) | 0.022 |
| Intraluminal bleeding | 4 (0.6) | 6 (0.9) | 10 (0.7) | 0.753 |
| Intra-abdominal bleeding | 2 (0.3) | 3 (0.4) | 5 (0.4) | 1.000 |
| Postop mortality (< POD30) | 1 (0.1) | 0 (0.0) | 1 (0.1) | 1.000 |