Preoperative performance status and health markers.
| Karnofsky Performance Status Score (%) | n (%) | Eastern Cooperative Oncology Group Grade | n (%) | American Society of Anesthesiologists Score | n (%) |
| 30 | 3 (3.3%) | 0 | 12 (17.4%) | 1 | 0 |
| 40 | 10 (11.1%) | 1 | 36 (52.2%) | 2 | 13 (17.3%) |
| 50 | 11 (12.2%) | 2 | 14 (20.3%) | 3 | 59 (78.7%) |
| 60 | 8 (8.9%) | 3 | 4 (5.8%) | 4 | 3 (4%) |
| 70 | 23 (25.6%) | 4 | 3 (4.3%) | ||
| 80 | 19 (21.1%) | ||||
| 90 | 15 (16.7%) | ||||
| 100 | 1 (1.1%) | ||||
| Total | 90 | 69 | 75 |