Table 4 Multivariate analysis of risk factors for overall survival (OS)
| B | SE | Wald | df | significance | Exp(B) | |
|---|---|---|---|---|---|---|
| KPS | .003 | .077 | .002 | 1 | .967 | 1.003 |
| Critical organ compression | 11.162 | 195.729 | .003 | 1 | .955 | 70,401.455 |
| Cranial nerve injury | 11.376 | 321.728 | .001 | 1 | .972 | 87,178.423 |
| Histology | .500 | 1.105 | .205 | 1 | .651 | 1.649 |
| Tumor volume | 2.081 | .824 | 6.372 | 1 | .012 | 8.013 |
| Recurrent disease | −1.116 | 1.034 | 1.166 | 1 | .280 | .327 |
| Re-radiotherapy | 2.376 | .840 | 7.993 | 1 | .005 | 10.759 |
| Surgery | −.896 | .811 | 1.220 | 1 | .269 | .408 |