Table 2. Association of methylation index (MI) with other molecular features and clinical data.

	Low MI	High MI
MSI status			P<0.001
MSI	50.7% (34)	49.3% (33)
MSS	96.5% (109)	3.5% (4)
KRAS			P = 0.006
wild type	74.6% (100)	25.4% (34)
mutant	93.5% (43)	6.5% (3)
BRAF			P<0.001
wild type	85.4% (140)	14.6% (24)
mutant	13.3% (2)	86.7% (13)
Gender			P = 0.010
Male	86.7% (85)	13.3% (13)
Female	70.7% (58)	29.3% (24)
Tumor Location			P<0.001
Right side	64.7% (55)	35.5% (30)
Left side	92.2% (83)	7.8% (7)
Age	64.6 (143)	73.0 (37)	P = 0.004