Table 4: Recursive Partition Analysis

Table 4:
Recursive Partition Analysis
Class	Description
Class I:	Age < 50, anaplastic astrocytoma, normal mental status
Class II:	Age > 50, KPS 70-100, anaplastic astrocytoma, symptom time > 3 mo
Class III:	Age < 50, anaplastic astrocytoma, abnormal mental status Age < 50, GBM, KPS 90-100
Class IV:	Age < 50, KPS < 90 Age > 50, KPS 70-100, anaplastic astrocytoma, symptoms < 3 mo Age < 50, KPS 70-100, gliobastoma multiforme, partial or complete removal and working neurologic function
Class V:	Age > 50, KPS 70-100, gliobastoma multiforme, partial/complete resection, nonworking neurologic function Age > 50, KPS 70-100, gliobastoma multiforme, biopsy and radiation dose > 5,440 cGy Age > 50, KPS < 70, normal mental status
Class VI	Age > 50, KPS < 70, abnormal mental status, dose < 5,440 cGy
Class	Median Survival (mo)	2-year survival
Class I:	58.6	76%
Class II:	37.4	68%
Class III:	17.9	35%
Class IV:	11.1	15%
Class V:	8.9	6%
Class VI	4.6	4%
KPS=Karnofsky Performance Status (see Table 3).