Table 4.
Results of univariate analysis (Log-rank test)
| Factor | Subgroup | 1-year survival (%) | 2-year survival (%) | Log-rank test |
|---|---|---|---|---|
| Age | <63 (10) | 68.6 | 57.1 | p = 0.392 |
| ≥63 (6) | 66.7 | 66.7 | ||
| Stage | II + III (6) | 100 | 80.0 | p = 0.334 |
| IV (10) | 66.7 | 53.3 | ||
| Treatment | Surgery (11) | 90.0 | 63.0 | p = 0.733 |
| CCRT (5) | 60.0 | 60.0 | ||
| Histology | SCC (11) | 80.0 | 56.0 | p = 0.579 |
| non-SCC (5) | 80.0 | 80.0 | ||
| DFI (months) | <12 (5) | 0.0 | 0.0 | p < 0.001 |
| >12 (11) | 90.9 | 79.5 | ||
| Number of metastases | Solitary (8) | 85.7 | 51.4 | p = 0.526 |
| Multiple (8) | 87.5 | 75.0 | ||
| Laterality of metastases | Unilateral (12) | 80.8 | 58.9 | p = 0.752 |
| Bilateral (4) | 75.0 | 75.0 | ||
| Outcome of metastasectomy | Complete resection (13) | 90.9 | 81.8 | p = 0.002 |
| Partial resection (3) | 33.3 | 0.0 |