Table 1.
Baseline characteristics
| Variable | Level | Overall (N = 77) | Age at surgery | P value | |
|---|---|---|---|---|---|
| < 70, (N = 54) | ≥ 70, (N = 23) | ||||
| Age, median (min–max) | 66 (28–85) | 61 (28–69) | 73 (70–85) | – | |
| Diabetes mellitus, N (%) | No | 70 (94.6) | 50 (96.2) | 20 (90.9) | 0.58 |
| Yes | 4 (5.4) | 2 (3.8) | 2 (9.1) | ||
| Missing | 3 | 2 | 1 | ||
| Hypertension, N (%) | No | 48 (64.9) | 42 (80.8) | 6 (27.3) | < 0.001 |
| Yes | 26 (35.1) | 10 (19.2) | 16 (72.7) | ||
| Missing | 3 | 2 | 1 | ||
| Cardiovascular comorbidity, N (%) | No | 69 (93.2) | 49 (94.2) | 20 (90.9) | 0.63 |
| Yes | 5 (6.8) | 3 (5.8) | 2 (9.1) | ||
| Missing | 3 | 2 | 1 | ||
| Vascular comorbidity, N (%) | No | 70 (94.6) | 50 (96.2) | 20 (90.9) | 0.58 |
| Yes | 4 (5.4) | 2 (3.8) | 2 (9.1) | ||
| Missing | 3 | 2 | 1 | ||
| Liver disease, N (%) | No | 70 (94.6) | 49 (94.2) | 21 (95.5) | 1.00 |
| Yes | 4 (5.4) | 3 (5.8) | 1 (4.5) | ||
| Missing | 3 | 2 | 1 | ||
| Respiratory disease, N (%) | No | 65 (87.8) | 47 (90.4) | 18 (81.8) | 0.44 |
| Yes | 9 (12.2) | 5 (9.6) | 4 (18.2) | ||
| Missing | 3 | 2 | 1 | ||
| Renal insufficiency, N (%) | No | 71 (95.9) | 51 (98.1) | 20 (90.9) | 0.21 |
| Yes | 3 (4.1) | 1 (1.9) | 2 (9.1) | ||
| Missing | 3 | 2 | 1 | ||
| Previous tumor, N (%) | No | 71 (95.9) | 50 (96.2) | 21 (95.5) | 1.00 |
| Yes | 3 (4.1) | 2 (3.8) | 1 (4.5) | ||
| Missing | 3 | 2 | 1 | ||
| Autoimmune disease, N (%) | No | 71 (95.9) | 49 (94.2) | 22 (100.0) | 0.55 |
| Yes | 3 (4.1) | 3 (5.8) | 0 (0.0) | ||
| Missing | 3 | 2 | 1 | ||
| Performance status (ECOG), N (%) | 0 | 45 (60.8) | 39 (75.0) | 6 (27.3) | 0.004 |
| 1 | 24 (32.4) | 9 (17.3) | 15 (68.2) | ||
| 2 | 4 (5.4) | 4 (7.7) | 0 (0.0) | ||
| 3 | 1 (1.4) | 0 (0.0) | 1 (4.5) | ||
| Missing | 3 | 2 | 1 | ||
| ASA, N (%) | 1 | 28 (37.3) | 25 (47.2) | 3 (13.6) | 0.001 |
| 2 | 32 (42.7) | 22 (41.5) | 10 (45.5) | ||
| 3 | 14 (18.7) | 6 (11.3) | 8 (36.4) | ||
| 4 | 1 (1.3) | 0 (0.0) | 1 (4.5) | ||
| Missing | 2 | 1 | 1 | ||
| Charlson Comorbidity Index, median (min–max)a | 4 (2–8) | 4 (2–7) | 5 (5–8) | < 0.001 | |
ECOG Eastern Cooperative Oncology Group, ASA American Society of Anesthesiologists
a3 missing values