From: The effect of non-small cell lung cancer histology on survival as measured by the graded prognostic assessment in patients with brain metastases treated by hypofractionated stereotactic radiotherapy
GPA score
0
0.5
1.0
Age
>60
50–60
<50
KPS
<70
70–80
90–100
No. of brain metasases
>3
2–3
1
Extracranial metastases
present
-
absent