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Table 3 Risk group splits according to the results of recursive partitioning analysis.

From: Recursive partitioning analysis of prognostic factors in WHO grade III glioma patients treated with radiotherapy or radiotherapy plus chemotherapy

  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   
  1. RT: radiotherapy
  2. PCV: procarbazine, lomustine, and vincristine
  3. CR: complete resection
  4. ICR: incomplete resection
  5. ECOG: Eastern Cooperative Oncology Group
  6. AO: anaplastic oligodendroglioma
  7. AOA: anaplastic oligoastrocytoma
  8. AA: anaplastic astrocytoma