| Surgical site infection (SSI) |  |  | |
---|---|---|---|---|
Predictive factors | Yes n (%) | No n (%) | HR (95% CI) | p - value |
Wound class | Â | Â | Â | Â |
 Clean or clean-contaminated | 12 (5.9) | 190 (94.1) | 1.0 |  |
 Contaminated or dirty | 22 (15.4) | 121 (84.6) | 2.7 (1.4-5.5) | 0.005 |
Type of anaesthesia used | Â | Â | Â | Â |
 Regional | 32 (9.7) | 298 (90.30 | 1.0 |  |
 General | 2 (13.3) | 13 (86.7) | 1.5 (0.4-6.5) | 0.551 |
Type of skin incision | Â | Â | Â | Â |
 Transverse | 3 (3.5) | 83 (96.5) | 1.0 |  |
 Vertical | 31 (12.0) | 228 (88.0) | 3.6 (1.1-11.8) | 0.034 |
Duration of procedure in mins | Â | Â | Â | Â |
 ≤60 | 24 (8.3) | 265 (91.7) | 1.0 |  |
 >60 | 10 (17.9) | 46 (82.1) | 2.4 (1.1-5.0) | 0.020 |
Type of surgeon | Â | Â | Â | Â |
 Senior* | 26 (8.4) | 282 (91.6) | 1.0 |  |
 Junior** | 8 (21.6) | 29 (78.4) | 2.8 (1.3-6.1) | 0.012 |
Number of people in theatre | Â | Â | Â | Â |
 ≤5 | 8 (13.8) | 50 (86.2) | 1.0 |  |
 >5 | 26 (9.1) | 260 (90.9) | 0.7 (0.3- 1.4) | 0.289 |
Estimated blood loss in mls | Â | Â | Â | Â |
 ≤500 | 25 (9.3) | 245 (90.7) | 1.0 |  |
 >500 | 9 (12.0) | 66 (88.0) | 1.4 (0.6-2.9) | 0.436 |
Antibiotic used | Â | Â | Â | Â |
 Non-ampicillin regimen | 14 (8.2) | 156 (91.8) | 1.0 |  |
 Ampicillin regimen | 20 (11.5) | 154 (88.5) | 1.4 (0.7- 2.8) | 0.304 |
Duration of antibiotic course | Â | Â | Â | Â |
 Single dose | 7 (8.5) | 75 (91.5) | 0.8 (0.4-1.8) | 0.608 |
 Multiple doses | 27 (10.3) | 235 (89.7) | 1.0 |  |