TABLE 2.

Patient demographics and clinical characteristics.

Characteristic	TCGA			GEO (GSE39582)
	Total cohort	Training cohort	Test cohort	External Validation cohort
Patients met criteria, n	201	141	60	265
Mean age, yrs	67.19 ± 11.73	67.57 ± 12.42	66.28 ± 9.96	67.70 ± 12.92
Gender, n
Male	111(55.22)	75(53.19)	36(60.00)	157(59.25)
Female	90(44.78)	66(46.81)	24(40.00)	108(40.76)
T stage, n
T3	194(96.52)	131(92.91)	58(96.67)	199(75.09)
T4	13(3.48)	11(7.09)	2(3.33)	51(19.25)
NA	–	–	–	15(5.661)
Chemotherapy, n
Yes	48(23.88)	34(24.11)	14(23.33)	58(21.89)
No	153(76.12)	107(75.89)	46(76.67)	206(77.74)
NA		–	–	1(0.377)
DFS event, n
Yes	50(24.90)	19(13.50)	6(10.00)	95(35.80)
No	151(75.10)	122(86.50)	54(90.00)	170(64.20)

Data are expressed as n (%) or mean ± standard deviation. yrs, years.