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| Variables | Median survival time after reirradiation (months) | P value |
|---|---|---|
| Histopathological subtype | 0.10 | |
| Glioblastoma multiforme (GBM) | 14.1 | |
| Anaplastic astrocytoma (AA) | 18.0 | |
| Karnofsky performance status (KPS) | 0.02 | |
| <70 | 7.1 | |
| >70 | 17.4 | |
| Recurrent tumor size (cm) | 0.42 | |
| >5 | 12.3 | |
| <5 | 14.1 | |
| Response to reirradiation | 0.20 | |
| Partial response (PR) | 12.3 | |
| Stable disease (SD) | 15.6 |
