Table 3 Univariate Analysis of preoperative risk factors for surgical site infection (SSI) in patients who underwent caesarean sections
| Â | Surgical site infection (SSI) | Â | Â | |
|---|---|---|---|---|
Predictive factors | Yes n (%) | No n (%) | HR (95% CI) | p - value |
Age in years | Â | Â | Â | Â |
 >30 | 4 (4.4) | 86 (95.60 | 1.0 |  |
 ≤30 | 30 (11.8) | 225 (88.2) | 2.8 (1.0-7.9) | 0.055 |
Parity | Â | Â | Â | Â |
 Multiparas | 19 (8.7) | 119 (91.3) | 1.0 |  |
 Nulliparous | 15 (11.8) | 112 (88.2) | 1.3 (0.7-2.6) | 0.393 |
BMI‡ |  |  |  |  |
 None obese | 30 (9.6) | 282 (90.4) | 1.0 |  |
 Obese | 4 (12.1) | 29 (87.9) | 1.3 (0.4-3.6) | 0.647 |
HIV status | Â | Â | Â | Â |
 Negative | 23 (10.6) | 195 (89.5) | 1.0 |  |
 Positive | 4 (18.2) | 18 (81.8) | 1.8 (0.6-5.1) | 0.295 |
Hypertension | Â | Â | Â | Â |
 No | 24 (8.3) | 265 (91.7) | 1.0 |  |
 Yes | 10 (17.9) | 46 (82.1) | 2.2 (1.1-4.7) | 0.031 |
ASA score* | Â | Â | Â | Â |
 1 or 2 | 22 (7.8) | 260 (92.2) | 1.0 |  |
 ≥3 | 12 (19.1) | 51 (80.9) | 2.7(1.3-5.5) | 0.005 |
Hemoglobin level in g/dl | Â | Â | Â | Â |
 >11 | 24 (10.0) | 217 (90.0) | 1.0 |  |
 <11 | 10 (10.4) | 86 (89.6) | 1.0 (0.5-2.1) | 0.960 |
Duration of ROM†in hrs |  |  |  |  |
 ≤8 | 25 (8.3) | 277 (91.7) | 1.0 |  |
 >8 | 9 (20.9) | 34 (79.1) | 2.7 (1.3-5.8) | 0.011 |
Number of vaginal exams | Â | Â | Â | Â |
 ≤3 | 20 (7.1) | 260 (92.9) | 1.0 |  |
 >4 | 14 (21.5) | 51 (78.5) | 3.3 (1.7-6.5) | 0.001 |
Duration of labor in hrs | Â | Â | Â | Â |
 ≤12 | 20 (7.3) | 256 (92.7) | 1.0 |  |
 >12 | 14 (20.3) | 55 (79.7) | 3.0 (1.5-6.0) | 0.002 |
Preop length of stays in hrs | Â | Â | Â | Â |
 ≤12 | 17 (7.8) | 200 (92.2) | 1.0 |  |
 >12 | 17 (13.3) | 111 (86.7) | 1.7 (0.9- 3.4) | 0.116 |