Table 2.
Univariate and multivariate analyses of overall survival
| Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|
| 2 year OS rate (%) | P value | Hazard ratio (95% CI) | P value | |
| Age | ||||
| <65 years | 53.2 | 0.455 | 0.90 (0.35–2.33) | 0.823 |
| ≥65 years | 40.1 | |||
| Sex | ||||
| Male | 47.9 | 0.423 | 2.68 (0.22–32.61) | 0.440 |
| Female | 50.0 | |||
| N staging | ||||
| 0–1 | 80.8 | <0.001 | 0.10 (0.02–0.53) | 0.006 |
| 2–3 | 32.4 | |||
| ECOG PS | ||||
| 0–1 | 53.2 | 0.035 | 0.20 (0.043–0.96) | 0.044 |
| 2 | 0.0 | |||
| Histology | ||||
| Squamous cell carcinoma vs | 45.8 | 0.544 | 2.49 (0.44–14.16) | 0.303 |
| Adenocarcinoma vs | 45.5 | 0.669 | 1.49 (0.32–6.99) | 0.617 |
| Not specified vs | 60.0 | 0.770 | NA | NA |
| Invasion site | ||||
| Aortic arch vs | 75.0 | 0.065 | 0.058 (0.002–2.25) | 0.127 |
| Descending aorta vs | 33.3 | 0.189 | 3.60 (0.30–43.02) | 0.312 |
| Pulmonary artery vs | 51.9 | 0.883 | 0.53 (0.074–3.73) | 0.520 |
| Superior vena cava vs | 62.5 | 0.579 | 0.16 (0.008–3.31) | 0.235 |
| Heart vs | 24.5 | 0.218 | 1.94 (0.24–15.75) | 0.537 |
OS = overall survival, CI = confidence interval, N = nodal, ECOG = European Cooperative Oncology Group, PS = Performance status, NA = Not analyzed.