Table 3.

Clinicopathological parameters compared to NGX6 promoter methylation analyed by Chi-square Test or Fisher' s Exact Test.

	Methylation status
Variable	Absent	Present	P-value
Sex
Male	9(47.4%)	10(52.6%)	0.369
Female	13(61.9%)	8(38.1%)
Age
<65 Years	11(40.7%)	16(59.3%)	0.008
≥ 65 Years	11(84.6%)	2(15.4%)
Dukes stage
A	4(66.7%)	2(33.3%)	0.111
B	10(71.4%)	4(28.6%)
C	5(38.5%)	8(61.5%)
D	3(42.9%)	4(57.1%)
Metastasis status
Negative	14(70.0%)	6(30.0%)	0.056
Positive	8(40.0%)	12(60.0%)
Primary site
Colon	7(38.9%)	11(61.1%)	0.067
Rectum	15(68.2%)	7(31.8%)