Wound outcomes according to the presence of a wound drain
| Outcome | With wound drain (group 1, n=99) | Without wound drain (group 2, n=213) | P value |
| Clear healing (n (%)) | 82 (82.8) | 153 (71.8) | 0.036 |
| Infection (n (%)) | 3 (3.0) | 8 (3.8) | 1.000 |
| Dehiscence (n (%)) | 11 (11.1) | 34 (16.0) | 0.256 |
| Seroma (n (%)) | 6 (6.1) | 34 (16.0) | 0.015 |
| Hematoma (n (%)) | 2 (2.0) | 0 (0) | 0.100 |
| Reoperation (n (%)) | 4 (4.0) | 5 (2.3) | 0.472 |