Table 1 Risk factors for infection with Enterobacteriaceae resistant to third-generation cephalosporins in 151 patients
Presence (n = 65) | Absence (n = 86) | Univariate analysis | ||
|---|---|---|---|---|
Crude OR | p | |||
Age (years) | ||||
Mean | 38.6 | 31.7 | ||
CI | 34.6–42.7 | 28.9–34.5 | 1.03 | 0.04 |
Gender, % | ||||
Female | 45.9 | 54.1 | 0.79 | 0.48 |
Preoperative antibiotic prophylaxisa, % | ||||
Yes | 46.3 | 53.7 | 1.27 | 0.48 |
Postoperative antibiotic prophylaxisb, % | ||||
Yes | 43.6 | 56.4 | 1.27 | 0.48 |
Surgery in past 12 months, % | ||||
Yes | 45.0 | 55.0 | 1.14 | 0.69 |
Hospitalization in past 12 months, % | ||||
Yes | 35.3 | 64.71 | 0.69 | 0.49 |
Altemeier wound class, % | ||||
1 | 42.7 | 57.3 | 0.93 | |
2 | 44.4 | 55.6 | ||
3–4 | 42.8 | 57.2 | ||
American society of anesthesiologists physical status score, % | ||||
1 | 42.6 | 57.4 | 0.45 | |
2 | 37.0 | 62.0 | ||
3 | 66.7 | 33.3 | ||
Length of operation, % | ||||
<30min | 39.0 | 60.0 | 0.25 | |
30 min–1 h | 41.3 | 58.7 | ||
1–2 h | 46.5 | 53.5 | ||
>2 h | 75.0 | 25.0 | ||
Type of surgery, % | ||||
Urology | 50.0 | 50.0 | 0.31 | |
Orthopaedics | 51.8 | 48.2 | ||
General surgery | 34.6 | 65.4 | ||
Gynaecology | 40.0 | 60.0 | ||
Delay between surgery and surgical-site infection (days), % | ||||
<15 | 43.8 | 56.2 | 0.83 | |
≥15 | 43.0 | 57.0 | ||