Table 6.
Multivariable logistic regression for the risk factors of postoperative infection.
| Variables | Univariable | Multivariable | ||||
|---|---|---|---|---|---|---|
| OR | 95% CI | P value | OR | 95% CI | P value | |
| Corticosteroids | 1.28 | 0.76–2.18 | 0.36 | 1.99 | 0.53–1.83 | 0.97 |
| Age > 66 years | 2.05 | 1.41–2.97 | 0.0002 | 1.76 | 1.16–2.68 | 0.0083 |
| Male | 1.76 | 0.79–3.90 | 0.16 | 1.72 | 0.65–4.55 | 0.28 |
| BMI ≤ 21 (kg/m2) | 1.35 | 0.92–1.99 | 0.128 | 1.76 | 1.13–2.74 | 0.0130 |
| TNM stage 3 & 4 | 1.32 | 0.87–2.00 | 0.19 | 1.11 | 0.71–1.71 | 0.65 |
| Hemoglobin (g/dl) | 0.90 | 0.81–0.99 | 0.0330 | 1.01 | 0.87–1.18 | 0.86 |
| Albumin (g/dl) | 0.58 | 0.37–0.92 | 0.0205 | 0.95 | 0.49–1.84 | 0.87 |
| ASA physical status ≥3 | 1.84 | 0.92–3.68 | 0.08 | 0.95 | 0.49–2.71 | 0.82 |
| Diabetes mellitus | 1.52 | 0.95–2.44 | 0.08 | 1.50 | 0.86–2.62 | 0.15 |
| Surgery duration, per hour | 1.25 | 1.12–1.40 | 0.0001 | 1.18 | 1.03–1.34 | 0.0139 |
| Infusion of inotrope | 1.61 | 1.07–2.41 | 0.0209 | 1.15 | 0.71–1.84 | 0.57 |
| Infusion of vasopressor | 1.50 | 1.02–2.21 | 0.0406 | 1.34 | 0.87–2.07 | 0.18 |
Variables with P < 0.2 in univariable analysis were presented in Univariable column. Abbreviations: BMI body mass index, TNM tumor node metastasis, ASA American Society of Anesthesiologists, OR odds ratio, CI confidence interval.