Table I.

Clinical traits of patients in the three colorectal cancer datasets.

Characteristics	GSE14333	GSE17536	GSE17537
Age, years
<60	61	59	24
≥60	165	118	31
Gender
Male	120	96	26
Female	106	80	29
Location
Left	93	N.A.	N.A.
Right	101	N.A.	N.A.
Unknown	32	N.A.	N.A.
Grade
1	N.A.	16	1
2	N.A.	134	32
3	N.A.	27	3
Unknown	N.A.	0	19
Stage
1	41	24	4
2	94	57	15
3	91	57	19
4	0	39	17