Table 2.

Baseline characteristics of the patients in different risk groups in the TCGA cohort and the GEO cohort.

Characteristics		TCGA cohort (N = 372)			GEO cohort (N = 165)
		High risk	Low risk	p-value	High risk	Low risk	p-value
Age (years)				0.205			0.033
	<60	34	45		15	27
	≥60	152	141		68	55
Gender				0.075			0.84
	Male	130	146		67	68
	Female	56	40		16	14
T stage				<0.001			0.002
	T0–2	42	79		53	58
	T3–4	143	107		23	7
	Tx	1	0		7	17
Lymph node metastasis				<0.001			0.243
	Yes	76	48		10	5
	No	104	117		72	77
	Unknown	6	21		1	0
Metastasis				0.775			0.443
	Yes	5	3		5	2
	No	91	92		78	80
	Unknown	90	91		0	0
Diagnosis subtype				0.075
	Papillary	49	68		NA	NA
	Non-papillary	135	115		NA	NA
	Unknown	2	3		NA	NA
Histologic grade				0.108			0.015
	High	180	171		38	22
	Low	5	14		45	60
	Unknown	1	1

NA, Not Applicable.