Table 2.
Cox proportional regression analysis for multivariate analysis of PFS-AR prediction.
| Covariate | p | Exp(b) | 95% CI of Exp(b) |
|---|---|---|---|
| Age subgroups | 0.9772 | 0.9929 | 0.6096 to 1.6173 |
| First + second line vs. further lines | 0.9570 | 1.0700 | 0.0918 to 12.4737 |
| Subtype | 0.1797 | 0.6850 | 0.3941 to 1.1905 |
| Number of systemic lines | 0.3384 | 1.5573 | 0.6288 to 3.8569 |
| Parenchyma irradiated | 0.3263 | 0.7809 | 0.4765 to 1.2796 |
| BED 100 a/b = 10 | 0.5289 | 0.5931 | 0.1167 to 3.0153 |
| BED 75 a/b = 10 | 0.0858 | 0.1720 | 0.0231 to 1.2812 |
| BED 100 a/b = 4 | 0.0017 | 9.9406 | 2.3737 to 41.6289 |
| BED 75 a/b = 4 | 0.0984 | 0.4053 | 0.1389 to 1.1829 |
| Brain vs. other parenchyma | 0.8739 | 1.1106 | 0.3038 to 4.0604 |
| Harrell’s C-index | 0.687 | ||
| 95% Confidence interval | 0.593 to 0.781 | ||