Table 3 Univariate analysis of patient risk groups
From: Antimicrobial stewardship measures in cardiac surgery and its impact on surgical site infections
Infections | SSI | p | DSWI | p |
|---|---|---|---|---|
Age (% within subgroup) | ||||
≥ 80a | 3 (2.9) | 0.668 | 2 (1.9) | 0.898 |
< 80a | 34 (3.7) | 16 (1.7) | ||
Sex (%) | ||||
M | 25 (3,2) | 0.221 | 12 (1.5) | 0.350 |
F | 12 (4.9) | 6 (2.4) | ||
BMI (%) | ||||
≥ 30 kg/m2 | 16 (4.7) | 0.179 | 9 (2.6) | 0.123 |
< 30 kg/m2 | 21 (3.0) | 9 (1.3) | ||
CRP (%) | ||||
≥ 1 mg/dL | 12 (7.4) | 0.005 | 6 (3.7) | 0.040 |
< 1 mg/dL | 25 (2.9) | 12 (1.4) | ||
COPD (%) | ||||
Yes | 5 (5.3) | 0.348 | 3 (3,2) | 0.264 |
No | 32 (3.4) | 15 (1.5) | ||
Diabetes mellitus (%) | ||||
Yes | 15 (4.6) | 0.227 | 7 (2.2) | 0.495 |
No | 22 (3.1) | 11 (1.6) | ||
Nicotine abuse (%) | ||||
Yes | 15 (4.3) | 0.357 | 6 (1.7) | 0.986 |
No | 22 (3.2) | 12 (1.8) | ||
Myocardial infarction within the past half year (%) | ||||
Yes | 12 (5.1) | 0.152 | 8 (3.4) | 0.027 |
No | 25 (3.1) | 10 (1.3) | ||
Ejection fraction < 30% (%) | ||||
Yes | 2 (4.2) | 0.828 | 1 (2.1) | 0.857 |
No | 35 (3.6) | 17 (1.7) | ||
Renal failure (%) | ||||
Yes | 12 (6.4) | 0.023 | 7 (3.7) | 0.022 |
No | 25 (3.0) | 11 (1.3) | ||
Emergency (%) | ||||
Yes | 5 (3.1) | 0.704 | 3 (1.9) | 0.914 |
No | 32 (3.7) | 15 (1.7) | ||
Revision surgery (%) | ||||
Yes | 23 (29.5) | 0.000 | 18 (23.1) | 0.000 |
No | 14 (1.5) | 0 (0.0) | ||
Transfusions (%) | ||||
≥ 5 | 14 (11.8) | 0.000 | 10 (8.4) | 0.000 |
< 5 | 23 (2.5) | 8 (0.9) | ||
Duration of intubation (%) | ||||
≥ 24 h | 9 (5.7) | 0.118 | 6 (3.8) | 0.031 |
< 24 h | 28 (3.2) | 12 (1.4) |