Table 5.
Multivariate Cox proportional hazard model for OS in the overall population of patients with (A) NSCLC, (B) stage I, (C) stage II, and (D) stage III.
| Analysis of maximum likelihood estimates | ||||
|---|---|---|---|---|
| Variable | P-value | HR | 95% CI | |
| (A) Overall population of patients with NSCLC | ||||
| Age | <0.0001 | 1.45 | 1.032 | 1.058 |
| Body mass index | 0.0500 | 0.977 | 0.955 | 1.000 |
| Gender | ||||
| F vs. M | 0.0035 | 0.709 | 0.563 | 0.893 |
| ASA | ||||
| 2 vs. 4 | 0.0680 | 0.577 | 0.320 | 1.042 |
| 3 vs. 4 | 0.0163 | 0.598 | 0.392 | 0.910 |
| Stage | ||||
| I vs. III | <0.0001 | 0.481 | 0.358 | 0.648 |
| II vs. III | 0.0495 | 0.736 | 0.543 | 0.999 |
| Fentanyl equivalents | 0.2318 | 1.060 | 0.964 | 1.165 |
| Preoperative radiation | ||||
| N vs. Y | 0.0078 | 0.534 | 0.337 | 0.848 |
| Postoperative radiation | ||||
| N vs. Y | 0.0025 | 0.639 | 0.477 | 0.854 |
| Thoracoscopy | ||||
| N vs. Y | 0.0477 | 1.463 | 1.004 | 2.132 |
| (B) Stage I | ||||
| Age | <0.0001 | 1.051 | 1.029 | 1.073 |
| Body mass index | 0.0026 | 0.939 | 0.902 | 0.978 |
| Gender | ||||
| F vs. M | <0.0001 | 0.422 | 0.286 | 0.622 |
| ASA | ||||
| 2 vs. 4 | 0.0127 | 0.237 | 0.076 | 0.735 |
| 3 vs. 4 | 0.0216 | 0.508 | 0.285 | 0.906 |
| Fentanyl equivalents | 0.0360 | 1.158 | 1.010 | 1.329 |
| Postoperative radiation | ||||
| N vs. Y | 0.0156 | 0.428 | 0.215 | 0.851 |
| (C) Stage II | ||||
| Age | <0.0001 | 1.057 | 1.030 | 1.084 |
| Fentanyl equivalents | 0.5869 | 0.942 | 0.761 | 1.167 |
| Preoperative radiation | ||||
| N vs. Y | 0.0016 | 0.191 | 0.068 | 0.535 |
| (D) Stage III | ||||
| Age | 0.0442 | 1.022 | 1.001 | 1.043 |
| LogFentanyl | 0.8621 | 0.986 | 0.839 | 1.158 |
| Preoperative radiation | ||||
| N vs. Y | 0.1439 | 0.661 | 0.379 | 1.152 |
| Postoperative chemotherapy | ||||
| N vs. Y | 0.0315 | 1.506 | 1.037 | 2.188 |