Table 1. Baseline characteristics of patients with and without wound infection.
| Parameter | Without Infection n = 3154 | With Infection n = 186 | P value |
|---|---|---|---|
| Age (years) | 71 (62–77) | 73 (63–78) | 0.086 |
| Gender, Males (%) | 66.9 | 67.2 | >0.999 |
| Body Mass Index (kg/m2) | 27.1 (24.6;30.1) | 27.4 (24.7;31.4) | 0.492 |
| Left-Ventricular Ejection Fraction (%) | 60 (51–65) | 56 (48–62) | <0.001 |
| EuroSCORE (logistic) | 5.1 (2.4;10.9) | 8.4 (3.7;19.9) | <0.001 |
| Smoker (%) | 28.5 | 30.6 | 0.713 |
| Diabetes Mellitus (%) | 25.9 | 40.3 | <0.001 |
| Re-Do (%) | 9.7 | 23.7 | <0.001 |
| NYHA Class > II (%) | 41.0 | 55.9 | <0.001 |
| Operation Priority, Urgent/Emergent (%) | 3.9 | 14.0 | <0.001 |
| eGFR (ml/min/1.73m2) | 77.4 (61.5;90.2) | 68.9 (49.5;89.1) | 0.001 |
| C-Reactive Protein (mg/l) | 2.5 (1.1;6.6) | 7.5 (2.5;26.0) | <0.001 |
| Glucose (mg/dl) | 105 (94;129) | 111 (92;138) | 0.384 |
| Type of Surgery | |||
| CABG (%) | 35.7 | 28.5 | 0.048 |
| Valve Surgery (%) | 36.5 | 39.6 | 0.059 |
| Combined CABG and Valve Surgery (%) | 15.1 | 23.1 | 0.005 |
| Others (%) | 12.7 | 18.8 | 0.024 |
| On-Pump Surgery (%) | 66.9 | 68.3 | 0.749 |
CABG: coronary artery bypass graft