| Variable | Levels | Total | Survivors (n = 80) | Non-survivors (n = 25) | P-value |
| Survival after surgery | >2 years | 80 | 80 | 0 | - |
| 1 - 2 years | 17 | 0 | 17 | - | |
| <1 year | 8 | 0 | 8 | - | |
| Age (y) |
| 65 (61 - 70) | 65 (61 - 70) | 66 (60 - 70) | 0.95 |
| Sex | Male | 89 | 69 | 20 | 0.52 |
| Female | 16 | 11 | 5 |
| |
| ASA | 1 or 2 | 102 | 79 | 23 | 0.14 |
| 3 or 4 | 3 | 1 | 2 |
| |
| Tumor stage | I | 21 | 19 | 2 | 0.07 |
| II | 24 | 20 | 4 |
| |
| III | 60 | 41 | 19 |
| |
| Histology | SCC | 101 | 77 | 24 | 1.00 |
| Adenocarcinoma | 4 | 3 | 1 |
| |
| Type of surgery | Open thoracotomy | 89 | 66 | 23 | 0.34 |
| Thoracoscopy | 16 | 14 | 2 |
| |
| Multiple cancer | Yes/No | 21/84 | 18/62 | 3/22 | 0.39 |
| Neoadjuvant chemotherapy | Yes/No | 79/26 | 57/23 | 22/3 | 0.11 |
| Neoadjuvant radiation | Yes/No | 55/50 | 41/39 | 14//11 | 0.81 |
| Body mass index |
| 22.4 (19.8 - 25.6) | 22.5 (20.0 - 26.7) | 21.4 (19.2 - 24.3) | 0.26 |
| smoking | Yes/No | 86/19 | 66/14 | 20/5 | 0.77 |
| COPD | Yes/No | 12/93 | 8/72 | 4/21 | 0.47 |
| Diabetes | Yes/No | 14/91 | 12/68 | 2/23 | 0.51 |
| Hypertension | Yes/No | 37/68 | 28/52 | 9/16 | 1.00 |
| Renal disease | Yes/No | 4/101 | 3/77 | 1/24 | 1.00 |
| Plasma albumin (mg/dL) |
| 3.9 (3.7 - 4.3) | 3.9 (3.7 - 4.3) | 3.6 (3.3 - 3.9) | <0.01 |
| Plasma CRP (mg/dL) |
| 0.08 (0.03 - 0.31) | 0.07 (0.03 - 0.3) | 0.13 (0.05 - 0.47) | 0.13 |