Table 3.
Results of the multivariable regression analysis for persistent wound drainage for patients by method of closure
| Parameter | OR (95% CI) | p value |
| Subcuticular closure | ||
| Allocation group | ||
| Aspirin | Reference | |
| Enoxaparin | 3.6 (1.5 to 10.6) | 0.009 |
| Female sex | 0.6 (0.3 to 1.2) | 0.13 |
| Arthroplasty type | ||
| THA | Reference | |
| TKA | 2.6 (1.2 to 6.1) | 0.02 |
| Skin staple closure | ||
| Allocation group | ||
| Aspirin | Reference | |
| Enoxaparin | 1.1 (0.7 to 1.9) | 0.66 |
| Age per year increase | 1.04 (1.01 to 1.07) | 0.02 |
| BMI per unit kg/m2 | 1.08 (1.04 to 1.12) | < 0.001 |
| Heart disease | 0.5 (0.2 to 1.1) | 0.07 |
| Preoperative potent anticoagulation | 5.7 (2.1 to 14.9) | < 0.001 |
| Preoperative single antiplatelet therapy | 3.2 (1.6 to 6.3) | 0.001 |
| Arthroplasty type | ||
| THA | Reference | |
| TKA | 0.3 (0.2 to 0.5) | < 0.001 |