Table 5.
Overall survival: univariate and backward stepwise Cox multivariate regression
| Variable | Univariate analysis |
Multivariate analysis |
||
|---|---|---|---|---|
| Chi-square | p-value | HR (95% CI) | p-value | |
| Histology | 1.10 | 0.29 | 1.47 (0.42-5.11) | 0.54 |
| Treatment | 0.02 | 0.89 | 0.94 (0.20-4.49) | 0.94 |
| EOR at diagnosis | 24.65 | < 0.001 | 1.12 (0.68-1.83) | 0.66 |
| MGMT | 3.01 | 0.08 | - | - |
| Volume | 1.28 | 0.26 | 0.99 (0.96-1.01) | 0.32 |
MGMT was not included in the multivariate analysis because of the limited number of available observations. HR, hazard ratio; CI, confidence interval; EOR, extension of resection; MGMT, methylguanine-DNA methyltransferase.