Table 2.
Multivariable Cox Proportional Hazards Model for Disease-Free and Overall Survival
| Variable | Disease-Free Survival | Overall Survival | ||
|---|---|---|---|---|
| HR (95% CI) | P | HR (95% CI) | P | |
| Chemotherapy (vs neoadjuvant) | 1.00 | — | 1.00 | — |
| Adjuvant | 1.10 (0.64-1.90) | 0.737 | 1.21 (0.63-2.30) | 0.572 |
| Age | 1.00 (0.96-1.04) | 0.805 | 1.01 (0.96-1.06) | 0.765 |
| Gender | — | — | 1.00 | — |
| Male | — | — | 2.03 (0.58-7.11) | 0.270 |
| Procedure (vs pneumonectomy) | 1.00 | 1.00 | — | |
| Lobectomy, bilobectomy, segmentectomy | 0.58 (0.14-2.45) | 0.461 | 0.54 (0.10-2.89) | 0.467 |
| Histologic subtype (vs adenocarcinoma) | 1.00 | — | 1.00 | — |
| Squamous | 0.48 (0.17-1.39) | 0.175 | 0.68 (0.20-2.34) | 0.54 |
| Large cell, mixed, other | 0.62 (0.22-1.75) | 0.367 | 1.13 (0.33-3.87) | 0.84 |
| Clinical stage (vs IB) | 1.00 | — | 1.00 | — |
| IIA | 0.77 (0.15-4.06) | 0.759 | 1.34 (0.16-10.96) | 0.787 |
| IIB | 3.30 (0.59-18.5) | 0.175 | 2.74 (0.35-21.71) | 0.339 |
| IIIA | 2.86 (0.45-18.1) | 0.264 | 1.72 (0.18-16.23) | 0.635 |
CI, confidence interval; HR, hazard ratio.