Table 2.

Sample grouping information.

Clinical features	TCGA-all	TCGA-test	TCGA-train	P value
Age
≤15	46	12	34	0.813
>15	39	12	27
Gender
Female	37	11	26	0.979
Male	48	13	35
OS
0	56	17	39	0.726
1	29	7	22