Table 4.
Univariate Cox regression analysis of all variables for mortality at 30 days and 1 year postoperatively: final step
| 30-day mortality | 1-year mortaily | |
|---|---|---|
| Male sex | 1.8 (1.6 to 2.5)** | 1.6 (1.2 to 3.2)** |
| ICU admission | 1.8 (1.2 to 3.8) | 1.3 (0.8 to 2.0) |
| ≥85 years | 2.8 (1.5 to 5.5)* | 3.0 (2.1 to 5.4)* |
| Preoperative comorbidities | ||
| Cardiovascular diseases | 1.7 (1.2 to 2.0) | 1.3 (1.1 to 1.8)* |
| Diabetes | 1.2 (0.9 to 1.9) | 1.4 (1.1 to 1.7) |
| Respiratory system diseases | 2.4 (1.4 to 3.8)* | 1.8 (1.2 to 2.8)* |
| Stroke | 1.3 (1.1 to 1.7) | 1.1 (0.9 to 1.5) |
| Dementia | 2.2 (1.4 to 4.8)* | 2.5 (2.1 to 4.0) |
| Hypoxia | 3.6 (1.5 to 12.4) | 1.9 (0.8 to 5.2) |
| Malignancy | 1.2 (1.0 to 2.0) | 1.7 (1.4 to 2.9) |
| Comorbidities ≥3 | 2.2 (1.5 to 3.2)** | 2.5 (2.2 to 3.7)** |
| ASA ≥ III | 2.5 (1.8 to 4.4)** | 3.8 (2.6 to 5.8)** |
| Postoperative complications | ||
| Acute cardiovascular events | 8.8 (5.0 to 18.9)** | 6.0 (3.2 to 10.6)** |
| Myocardial infarction | 10.1 (3.3 to 36.7)** | 8.4 (2.0 to 32.5)** |
| Acute respiratory events | 8.5 (6.6 to 13.1)** | 5.0 (3.5 to 7.3)** |
| Stroke | 8.8 (4.9 to 18.5)** | 5.6 (3.4 to 9.7)* |
| Delirium | 2.0 (1.2 to 4.3) | 1.6 (0.9 to 3.4) |
| DVT/PE | 1.9 (1.1 to 4.2) | 2.3 (1.7 to 3.6) |
| Hypoxia | 3.6 (1.9 to 8.8)* | 2.4 (1.3 to 4.4) |
| Anemia | 0.9 (0.6 to 2.3) | 1.6 (0.9 to 2.8) |
| Deep wound infection | 0.5 (0.1 to 4.8) | 1.2 (1.0 to 3.5) |
| ≥3 complications | 14.5 (8.9 to 19.9)** | 7.8 (4.6 to 10.3)** |
Notes: Data are hazard ratios (95% confidence intervals);
**
P<0.01;
*
P<0.05.
Abbreviations: ASA, American Society of Anesthesiologists; DVT/PE, deep vein thrombosis/pulmonary embolus; ICU, intensive care unit.