Table 4.
Multivariable Cox regression model results.
| Parameter | HR | 95% CI | p-Value |
|---|---|---|---|
| Demographical and clinical: | |||
| COPD | 10.58 | 2.42–46.36 | 0.002 |
| Stroke | 19.25 | 5.54–66.94 | <0.001 |
| PAD | 3.78 | 1.28–11.15 | 0.016 |
| Laboratory parameters: | |||
| preoperative PLR | 0.98 | 0.96–0.99 | 0.001 |
| postoperative Hb | 3.27 | 1.09–2.79 | 0.018 |
| Neutrophils > 4.3 × 109/L | 13.44 | 1.05–3.68 | 0.037 |
| postoperative SIRI > 5.4 | 0.29 | 0.09–0.92 | 0.036 |
| postoperative NLR > 3.5 | 2.21 | 1.48–3.32 | <0.001 |
| postoperative creatinine | 1.02 | 1.01–10.4 | 0.003 |
Abbreviations: COPD—chronic obstructive pulmonary disease, Hb—hemoglobin, NLR—neutrophil to lymphocyte ratio, PAD—peripheral artery disease, PLR—platelet to lymphocyte ratio, SIRI—systemic inflammatory response index. Preoperative laboratory parameters were performed on admission for surgery, postoperative laboratory parameters were performed 24 h after surgery. Statistics were performed using a multivariable proportional hazard Cox regression model.