Exposure | Unadjusted estimate* | Model 1* | Adjusted estimate1 | Model 2* | Adjusted estimate2 |
---|
OR (95% CI) | P value | OR (95% CI) | P value | OR (95% CI) | P value |
---|
SSIs | | | | | | |
Postoperative AP | | | | | | |
No | 1 | | 1 | | 1 | |
Yes | 2.21 (1.32, 3.68) | 0.002 | 2.14 (1.28, 3.59) | 0.004 | 2.13 (0.76, 5.99) | 0.153 |
Other HAIs | | | | | | |
Postoperative AP | | | | | | |
No | 1 | | 1 | | 1 | |
Yes | 1.28 (0.66, 2.49) | 0.469 | 1.24 (0.63, 2.42) | 0.532 | 3.69 (0.99, 13.81) | 0.053 |
- AP, antibiotic prophylaxis; SSIs, surgical site infections; HAIs, healthcare-associated infections; OR, odds ration; CI, confidence interval; ASA, American Society of Anesthesiology; NNIS, National Nosocomial Infections Surveillance
- 1Model 1 was adjusted for age, sex, and diabetes
- 2Model 2 was adjusted for age, sex, diabetes, surgical category, surgical approach, surgical time, emergency, ASA score (0 and 1), NNIS score 1 (0 and 1 point) and 2 (2 and 3 points), surgeon, inpatient department, intraoperative blood loss, any AP, intraoperative redosing, AP within 48 h postoperatively, and AP days
- *The sample size used for unadjusted estimate, Model 1, and Model 2 is all 1073