Table 1:

Association between MATS risk score and clinicopathological factors

		Training Cohort			Validation Cohort
		MATS risk score			MATS risk score
Variables		Low	High	P value	Low	High	P value
		(N=107)	(N=35)		(N=144)	(N=142)
Gender
	Male	58	26	0.03	73	89	0.04
	Female	49	9		71	53
Age
	<65	71	24	0.80	42	54	0.11
	≥65	36	11		102	88
Location
	Colon	57	14	0.17	104	80	0.005
	Rectum	50	21		40	62
Histology
	Differentiated	99	30	0.22	135	126	0.13
	Undifferentiated	8	5		9	16
Tumor size
	≤45mm (median)	58	13	0.07	69	43	0.002
	>45mm	49	22		70	94
	not available				5	5
T stage
	T1–3	79	22	0.21	108	90	0.03
	T4	28	13		36	52
Lymphatic invasion
	Absent	73	19	0.13	70	61	0.36
	Present	34	16		74	80
	not available	0	0		0	1
venous invasion
	Absent	43	10	0.21	18	10	0.12
	Present	64	25		126	131
	not available	0	0		0	1
Lymphnode Metastasis
	Absent	40	14	0.78	95	65	<0.001
	Present	67	21		49	77
Preoperative CEA
	<5	75	21	0.26	85	77	0.53
	5≤	32	14		58	61
	not available	0	0		1	4