Table 2. The number of differentially methylated (DM) CpG sites among the 375,324 filtered-in CpG sites between the monozygotic (MZ) co-twins with the dual thresholds of absolute difference in the M-value (ΔM) and the False Discovery Rate (FDR)-adjusted P value.

Threshold	#1 (%)	#2 (%)	#3 (%)	#4 (%)	#5 a (%)	#6 (%)	#7 (%)	#8 (%)	#9 (%)	#10 (%)
|ΔM| > 1.0 & FDR-adjusted P value < 0.05	1,460	1,074	513	5,743	3,481	327	906	922	509	452
	0.389%	0.286%	0.137%	1.530%	0.927%	0.087%	0.241%	0.246%	0.136%	0.120%
|ΔM| > 1.0 & FDR-adjusted P value < 0.01	1,191	804	369	4,707	2,971	236	692	738	377	347
	0.317%	0.214%	0.098%	1.254%	0.792%	0.063%	0.184%	0.197%	0.100%	0.092%
|ΔM| > 1.0 & FDR-adjusted P value < 0.001	934	579	249	3,713	2,415	164	489	555	262	233
	0.249%	0.154%	0.066%	0.989%	0.643%	0.044%	0.130%	0.148%	0.070%	0.062%
|ΔM| > 1.0 & FDR-adjusted P value < 0.0001	755	451	191	3,042	1972	110	399	455	188	171
	0.201%	0.120%	0.051%	0.810%	0.525%	0.029%	0.106%	0.121%	0.050%	0.046%

a: MZ 5A vs. MZ 5B_1^st.