Fig. 1.

A : There is a significant association between survival time and KPS score at the time of GKRS for brainstem metastasis (mean survival time 22 months among 15 patients in score more than 70 on KPS vs. 6 months for 17 in score less than 70 on KPS, p=0.0001). B : RPA Kaplan-Meier survival curve shows significant a difference between the three classes (p=0.0059), with the expected mean survival for class 1 patients to be 17 months, 22 months for class 2, and 7 months for class 3. C : Survival of 15 patients in RPA 3 (mean survival=7 months) compared with 8 patients in RPA 1 and 2 together (mean survival=21 months), p=0.0014.