TABLE 2. Univariate logistic regression analysis of SSI.
| Independent variable | Regression coefficient | Standard error | p-value | OR (95% CI) |
|---|---|---|---|---|
| Sex | −0.71 | 0.48 | 0.14 | 0.49 (0.19–1.26) |
| Age | 0.05 | 0.29 | 0.11 | 1.05 (0.99–1.11) |
| BMI | 0.05 | 0.06 | 0.40 | 1.05 (0.93–1.19) |
| Smoking | 0.29 | 0.53 | 0.58 | 1.34 (0.47–3.80) |
| ASA classification (≥3) | 0.92 | 0.72 | 0.20 | 2.52 (0.62–10.30) |
| Surgical time | 0.00 | 0.01 | 0.54 | 1.00 (0.99–1.01) |
| EBL | 0.00 | 0.00 | 0.69 | 1.00 (0.99–1.01) |
| Transfusion | 0.22 | 0.74 | 0.77 | 1.25 (0.30–5.26) |
| HbA1c (≥6.9%) | 1.50 | 0.57 | 0.008* | 4.50 (1.49–13.62) |
SSI: group of patients with surgical site infection, OR: odds ratio, CI: confidence interval, BMI: body mass index, HbA1c: hemoglobin A1c, ASA: American Society of Anesthesiologists, EBL: estimated blood loss.
*Statistically significant value.