Table 4. The incidence of postoperative complications.
| Total | I [0, 60%) | II [60%, 70%) | III [70%, 80%) | IV [80%, 100%] | P value | |
|---|---|---|---|---|---|---|
| Patients (n) | 254 | 66 | 63 | 53 | 72 | |
| Acute heart failure | 1 | 0 | 0 | 1 | 0 | 0.209* |
| Acute pancreatitis | 1 | 1 | 0 | 0 | 0 | 0.717* |
| Acute renal failure | 0 | 0 | 0 | 0 | 0 | |
| Acute respiratory failure | 1 | 0 | 0 | 1 | 0 | 0.209* |
| Anastomotic fistula | 2 | 2 | 0 | 0 | 0 | 0.170* |
| Atrial fibrillation | 2 | 0 | 2 | 0 | 0 | 0.104* |
| Cardiac arrest | 0 | 0 | 0 | 0 | 0 | |
| DVT | 5 | 2 | 1 | 1 | 1 | 0.933* |
| Gastrointestinal bleeding | 2 | 2 | 0 | 0 | 0 | 0.170* |
| Hoarseness | 1 | 0 | 0 | 1 | 0 | 0.224* |
| Ileus | 6 | 2 | 1 | 2 | 1 | 0.933* |
| Liver dysfunction | 5 | 1 | 3 | 1 | 0 | 0.233* |
| Myocardial infarction | 1 | 1 | 0 | 0 | 0 | 0.717* |
| Non-planned re-operation | 1 | 0 | 0 | 0 | 1 | > 0.999* |
| Persistent coma postoperatively ≥ 24 hours | 0 | 0 | 0 | 0 | 0 | |
| Pneumothorax | 0 | 0 | 0 | 0 | 0 | |
| POCD | 0 | 0 | 0 | 0 | 0 | |
| Postoperative reintubation | 0 | 0 | 0 | 0 | 0 | |
| Pulmonary infarction | 1 | 1 | 0 | 0 | 0 | 0.717* |
| Pulmonary infections | 33 | 12 | 8 | 6 | 5 | 0.250 |
| Septicopyemia | 3 | 1 | 0 | 1 | 1 | 0.890* |
| Septic shock | 0 | 0 | 0 | 0 | 0 | |
| SSIs | 39 | 16 | 13 | 5 | 5 | 0.013 |
| Stroke | 0 | 0 | 0 | 0 | 0 | |
| Urinary tract infections | 4 | 1 | 3 | 0 | 0 | 0.086* |
| Wound dehiscence | 1 | 0 | 1 | 0 | 0 | 0.457* |
| Overall complications | 73 | 26 | 21 | 14 | 12 | 0.023 |
POCD: postoperative cognitive dysfunction; SSIs: surgical site infections.
*Fisher exact test, all other statistics: Chi-Square test.