Open Access
Table 2
Primary and secondary outcomes by prophylactic surgical drain vs. no drain.
| Drain |
No drain |
Risk difference | RR | p-value* | |
|---|---|---|---|---|---|
| Risk | Risk | ||||
| Surgical site infections | 0.263 | 0.026 | −0.237 | 0.1 | 0.007 |
| Post-operative blood transfusion | 0.237 | 0.105 | −0.132 | 0.444 | 0.222 |
| Wound characteristics | |||||
| Swelling | 0.105 | 0.158 | 0.053 | 1.5 | 0.736 |
| Ecchymosis | 0.132 | 0.158 | 0.026 | 1.2 | 1.000 |
| Gaping | 0 | 0.026 | 0.026 | 1.0 | 1.000 |
| Dressing change | 0.211 |
0.342 |
0.132 |
1.625 |
0.305 |
| Mean | Mean | ∆ | p-value | ||
| Post-operative pain | |||||
| 6 h | 5.842 | 6.211 | 0.368 | 0.249 | |
| 12 h | 3.105 | 3.289 | 0.184 | 0.566 | |
| Length of hospital stay (days) | 11.263 | 11.158 | −0.105 | 0.949 |
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