Table 3.
Univariate Analysis of preoperative risk factors for surgical site infection (SSI) in patients who underwent caesarean sections
| |
Surgical site infection (SSI) |
|
|
|
|---|---|---|---|---|
| Predictive factors | Yes n (%) | No n (%) | HR (95% CI) | p - value |
| Age in years |
|
|
|
|
| >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 |
|
|
|
|
| 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 |
|
|
|
|
| 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 |
|
|
|
|
| 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* |
|
|
|
|
| 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 |
|
|
|
|
| >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 |
|
|
|
|
| ≤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 |
|
|
|
|
| ≤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 |
|
|
|
|
| ≤12 |
17 (7.8) |
200 (92.2) |
1.0 |
|
| >12 | 17 (13.3) | 111 (86.7) | 1.7 (0.9- 3.4) | 0.116 |
*ASA = American Society of Anesthesiologists †ROM = rupture of membranes.
‡ BMI = Body mass index in kg/M2.