Table 1.

Baseline demographics and clinical characteristics of patients.

	Training cohort (n = 166)			External validation cohort (n = 82)
	Glioblastoma (n = 109)	Metastasis (n = 57)	P value	Glioblastoma (n = 50)	Metastasis (n = 32)	P value
Age (years)*	58.4 ± 13.6	58.4 ± 12.1	0.990	58.3 ± 13.7	60.7 ± 11.0	0.411
Male	78 (71.6%)	31 (54.4%)	0.027	30 (60.0%)	18 (56.3%)	0.737
Primary site of metastasis
Lung		24 (42.1%)			15 (46.9%)
Breast		6 (10.5%)			4 (12.5%)
Colon/rectum		6 (10.5%)			4 (12.5%)
Urinary tract		5 (8.8%)			3 (9.3%)
Genitourinary tract		10 (17.5%)			6 (18.8%)
Others		11 (19.3%)			3 (9.3%)

*Data are means ±  SD.