Table 2.
Variables studied in univariate analysis and their association with the development of any postoperative infection (n = 13) and with development of post-operative SSI (n = 10).
| Variable | Post-op. Infection n = 13 (7.4) |
No Infection n = 163 (92.6) |
P | Post-op. SSI n = 10 (5.7) |
No SSI n = 166 (94.3) |
P |
|---|---|---|---|---|---|---|
| Age, median (IQR) | 27 (24-32) | 28 (24-32) | 1 | 28 (23-32) | 28 (24-32) | 1 |
| Multiparity, n (%) | 7 (53.8) | 91 (55.8) | 1 | 6 (60) | 92 (55.4) | |
| BMI >25 kg/m2, n (%) | 13 (100) | 124 (76.1) | 0.08 | 10 (100) | 127 (76.5) | 0.12 |
| BMI ≥ 30 kg/m2, n (%) | 7 (53.8) | 69 (42.3) | 0.6 | 5 (5) | 71 (42.8) | 0.7 |
| Diabetes mellitus, n (%) | 0 (0) | 7 (4.3) | 1 | 0 (0) | 7 (4.2) | 1 |
| Hypertension/other CVD, n (%) | 0 (0) | 36 (22.1) | 0.07 | 0 (0) | 36 (21.7) | 0.2 |
| Chronic respiratory disease, n (%) | 0 (0) | 1 (0.6) | 0.9 | 0 (0) | 1 (0.6) | 1 |
| Corticosteroid use, n (%) | 0 (0) | 2 (1.2) | 1 | 0 (0) | 2 (1.2) | 1 |
| Creatinine in mg/dL, median (IQR) | 0.6 (0.5-0.85) | 0.6 (0.5-0.7) | 0.2 | 0.7 (0.5-0.8) | 0.6 (0.5-0.7) | 0.2 |
| ASA ≥ 2, n (%) | 7 (53.8) | 52 (31.9) | 0.1 | 5 (50) | 54 (32.5) | 0.3 |
| Regular prenatal f/u, n (%) | 11 (84.6) | 156 (96.9) | 0.09 | 8 (80) | 159 (97) | 0.05* |
| Vaginal examinations >1, n (%) | 9 (69.2) | 87 (53.4) | 0.4 | 8 (80) | 88 (53) | 0.11 |
| Vaginal examinations ≥ 6, n (%) | 6 (46.2) | 17 (10.4) | 0.002* | 5 (50) | 18 (10.8) | 0.004* |
| Ruptured membranes, n (%) | 7 (53.8) | 47 (28.8) | 0.1 | 6 (60) | 48 (28.9) | 0.07 |
| Ruptured membranes ≥ 6 hours, n (%) | 2 (15.4) | 7 (4.3) | 0.1 | 2 (20) | 7 (4.2) | 0.08 |
| Non-elective cesarean, n (%) | 9 (69.2) | 78 (47.9) | 0.2 | 8 (80) | 79 (47.6) | 0.056 |
| Type of anesthesia (general vs. regional), n of general (%) | 5 (38.5) | 105 (64.4) | 0.08 | 2 (20) | 108 (65.1) | 0.006* |
| Duration of surgery >60 minutes, n (%) | 10 (76.9) | 101 (62) | 0.4 | 7 (70) | 104 (62.7) | 0.7 |
| Blood loss >500 ml, n (%) | 10 (76.9) | 64 (39.3) | 0.016* | 8 (80) | 66 (39.8) | 0.018* |
| Duration of hospitalization in days, median (IQR) | 5 (4-8) | 4 (4-4) | <0.001* | 5 (4-8) | 4 (4-4) | <0.001* |
*: Significant associations p < 0.05. ASA: American society of Anesthesiologists score, BMI: Body mass index, CVD: Cardiovascular disease, Post-op: postoperative, IQR: Interquartile range