Table 2. Patient Characteristics.

Characteristic	BRT + TMZ (n = 257)		BRT alone (n = 242)
	No.	%	No.	%
Sex
Male	130	51	128	53
Female	127	49	114	47
Median age, years	59.8	-	59.2	-
Range	37–79	-	29–81	-
KPS
≤	162	63	162	68
≥	51	20	40	16
Data not supplied	44	17	40	16
Primary tumor site
Breast cancer	79	31	73	30
NSCLC and others	176	68	168	69
Unknown	2	1	1	1
Extracranial metastases
Yes	147	57	144	60
No	88	34	85	35
Data not supplied	22	9	13	5
RPA class
I	35	14	31	13
II	105	41	95	39
III	20	8	18	8
Data not supplied	97	37	98	40

No., number; BRT, brain radiation therapy; TMZ, temozolomide; KPS, Karnofsky performance status; NSCLC, non-small cell lung cancer; RPA, recursive partitioning analysis.