Table 3.
Risk group splits according to the results of recursive partitioning analysis.
| Risk group | Number of patients | Number of events | |
|---|---|---|---|
| Group A | RT-PCV, CR | 25 | 3 |
| RT-PCV, ECOG 0, ICR | |||
| Group B | RT-PCV, ECOG>0, ICR, AO/AOA | 38 | 17 |
| RT, ECOG<2, CR | |||
| Group C | RT-PCV, ECOG>0, ICR, AA | 34 | 25 |
| RT, ECOG<2, ICR, AO/AOA | |||
| Group D | RT, ECOG<2, ICR, AA | 35 | 31 |
| RT, ECOG≥ 2 |
RT: radiotherapy
PCV: procarbazine, lomustine, and vincristine
CR: complete resection
ICR: incomplete resection
ECOG: Eastern Cooperative Oncology Group
AO: anaplastic oligodendroglioma
AOA: anaplastic oligoastrocytoma
AA: anaplastic astrocytoma