Table 4. Statistical comparisons of the methylation rate at each CpG locus for all three groups.

CpG site	A/B/V		A/B		A/V		B/V
	X2	P	Z	P	Z	P	Z	P
CpG_2	2.433	0.296	−1.222	0.231	−0.164	0.870	−1.454	0.146
CpG_3	18.288	0.000*	−4.261	0.000*	−1.873	0.061	−2.360	0.018*
CpG_4	0.148	0.928	−0.380	0.718	−0.272	0.786	−0.054	0.957

A: Uygur patient group; B: Uygur negative control group; V: Uygur normal control group. * denotes P<0.05, and ** denotes P<0.017.