Table 1.

Patient Characteristics.^a,b

Characteristic	Number (%)
Age
<40 years	5 (4.5)
40-50 years	12 (10.8)
51-60 years	39 (35.2)
61-70 years	33 (29.7)
>71 years	22 (19.8)
Karnofsky performance status
90-100%	45 (44.6)
70-80%	51 (45.9)
<70%	5 (4.5)
GPA
0	0 (0.0)
0.5	2 (1.8)
1.0	14 (12.6)
1.5	11 (9.9)
2.0	21 (18.9)
2.5	17 (15.3)
3.0	19 (17.1)
3.5	4 (3.6)
4.0	6 (5.4)
Unknown	16 (14.4)
RPA
I	22 (19.8)
II	74 (66.7)
III	3 (2.7)
Unknown	12 (10.8)
Primary histology
Non–small cell lung	49 (44.2)
Melanoma	24 (39.6)
Breast	18 (16.2)
Small-cell lung	3 (2.7)
Other	17 (15.3)
Extracranial disease
Controlled	46 (41.4)
Uncontrolled	65 (58.6)

Abbreviations: GPA, graded prognostic assessment; RPA, recursive partition analysis.

^aN = 111.

^bKarnofsky performance status (KPS) does not equal 100% and 10 patients did not have known KPS.