Table 2. The demographics and clinical characteristics of patients in training cohort and testing cohort.

Characteristics	Total (n=120)	Training cohort (n=83)	Testing cohort (n=37)	P value
Age (years), mean ± SD	33.92±19.80	32.41±17.86	37.29±23.51	0.21
Age (years), median [IQR]	27 [5–85]	28 [5–73]	27 [11–85]	0.21
Survival time (months), median [IQR]	153 [3–493]	153 [4–490]	155 [3–493]	0.97
Age (years), n				0.20
<20	38	28	10
20–60	66	47	19
>60	16	8	8
Sex, n				0.84
Male	58	41	17
Female	62	42	20
Race, n				0.29
White	93	61	32
Black	16	13	3
Others	11	9	2
SEER stage, n				0.12
Localized	50	37	13
Regional	55	39	16
Distant	15	7	8
Surgery, n				>0.99
Yes	111	77	34
No	9	6	3
Radiation, n				>0.99
Yes	11	8	3
No	109	75	34
Chemotherapy, n				0.10
Yes	78	58	20
No	42	25	17
Vital, n				0.11
Alive	66	50	16
Dead	54	33	21

SD, standard deviation; IQR, interquartile range; SEER, Surveillance, Epidemiology, and End Results.