Table 3 Cox regression models to assess the impact of age (<40 vs. ≥ 40), WHO grading (grade I + II vs. grade III + IV), KPS (≤70 vs. > 70) and initial treatment (no vs. external beam radiation or radiochemotherapy) on the relative risc to die
Relative risk | 95% CI | p-value | |
|---|---|---|---|
Age (years) | |||
< 40 | 1 | ||
≥ 40 | 1.7 | 0.8 to 3.4 | 0.143 |
KPS | |||
> 70 | 1 | ||
≤ 70 | 6.7 | 2.9 to 15.8 | < 0.001 |
WHO grade | |||
Low | 1 | ||
High | 1.8 | 0.9 to 3.6 | 0.104 |
Treatment | |||
No tumor specific therapy | 1 | ||
External beam radiation | 0.4 | 0.2 to 0.9 | 0.021 |
Radio-/Chemotherapy | 0.3 | 0.1 to 0.9 | 0.041 |