Multivariate analysis by the Cox proportional hazard regression model in a backward manner in 40 GBM patients with EGFR amplification
| Variable | HR (95% CI)a | P |
|---|---|---|
| Age (yrs) | ||
| ≥55 vs. <55 | nsb | |
| KPS | ||
| 40–60 vs. 70–100 | ns | |
| Surgery | ||
| GTR vs. PR | ns | |
| EGFRwt | ||
| Overexpression vs. no overexpression | ns | |
| EGFRvIII | ||
| Overexpression vs. no overexpression | 2.71 (1.36–5.39) | 0.0044 |
a CI, confidence interval.
b ns, not significant.