Table 2 Results of univariate analysis to detect association between factors studied and SSI
Variables | SSIs (n = 94, 7.58%) | Non-infection group (n = 1146, 92.42%) | P value |
|---|---|---|---|
Age > 79 | 18 (19.1) | 419 (36.6) | 0.004a |
Surgery type | 0.764 | ||
 Emergency surgery | 93 (98.9) | 1131 (98.7) |  |
 Selective surgery | 1 (1.1) | 15 (1.3) |  |
 Season of surgery (Summer) | 45 (47.9) | 741 (64.7) | 0.947 |
 Gender (Male) | 40 (42.6) | 285 (24.9) | 0.052 |
Place of residence | 0.017a | ||
 Rural area | 74 (78.7) | 607 (53.0) |  |
 Urban area | 20 (21.3) | 539 (47.0) |  |
BMI (> 26.6) | 81 (86.2) | 580 (50.6) | 0.000a |
Diabetes mellitus | 20 (21.3) | 151 (13.2) | 0.575 |
Hypertension | 46 (48.9) | 467 (40.8) | 0.927 |
Anemia | 3 (3.2) | 23 (2.0) | 0.771 |
Smoking | 16 (17.0) | 106 (9.2) | 0.161 |
Liver disease | 2 (2.1) | 17 (1.5) | 0.700 |
ASA score | |||
 III | 46 (48.9) | 566 (49.4) | 0.027a |
 IV | 2 (2.1) | 29 (2.5) |  |
Intraoperative bleeding (ml) | |||
 ≤ 400 | 78 (83.0) | 862 (75.2) | 0.504 |
 > 400 | 16 (17.0) | 281 (24.5) |  |
Operating time (> 107 min) | 22 (23.4) | 373 (32.5) | 0.002a |
Intraoperative body temperature | 0.300 | ||
 < 36.3 | 25 (26.6) | 131 (11.4) |  |
 ≥ 37.3 | 2 (2.1) | 23 (2.0) |  |
Intraoperative antibiotics use | 87 (92.6) | 826 (72.1) | 0.009a |
Postoperative antibiotics use | 90 (95.7) | 724 (63.2) | 0.001a |
TPb (< 58 g/L) | 13 (13.8) | 111 (9.7) | 0.767 |
ALBb (< 41.6 g/L) | 74 (78.7) | 596 (52.0) | 0.006a |
GLOBb (< 20 g/L) | 6 (6.4) | 68 (5.9) | 0.224 |
GLUb (> 6.10 mmol/L) | 47 (50.0) | 472 (41.2) | 0.593 |
WBCb (109/L) | 0.421 | ||
74 (78.7) | 894 (78.0) | Â | |
 < 4 | 0 (0.0) | 82 (1146) |  |
 > 10 | 20 (21.3) | 170 (14.8) |  |
LYMb (< 1.26a109/L) | 55 (58.5) | 367 (32.0) | 0.020a |
MONb (109/L) | 0.471 | ||
 References (0.1–0.6) | 61 (64.9) | 805 (70.2) |  |
 < 0.1 | 4 (4.3) | 5 (0.4) |  |
 > 0.6 | 29 (30.9) | 336 (29.3) |  |
EOSb (109/L) | 0.061 | ||
 References (0.02–0.52) | 71 (75.5) | 947 (82.6) |  |
 < 0.02 | 23 (24.5) | 176 (15.4) |  |
 > 0.52 | 0 (0.0) | 23 (2.0) |  |
BASb (< 0.05a109/L) | 89 (94.7) | 978 (85.3) | 0.530 |
PLTb (109/L) | 0.844 | ||
 References(100–300) | 82 (87.2) | 1017 (88.7) |  |
 < 100 | 3 (3.2) | 17 (1.5) |  |
 > 300 | 9 (9.6) | 112 (9.8) |  |
Drainage use | 51 (54.3) | 387 (33.8) | 0.015a |