Measure   Site with p ≤ 0.05 Total
(a) (b) (c)
with case #5 regardless #5 without case #5
β-value 809 (29.85%) 1,282 (47.31%) 619 (22.84%) 2,710
M-value 592 (21.69%) 1,523 (55.81%) 614 (22.50%) 2,729
N-value 361 (18.90%) 1,147 (60.05%) 402 (21.05%) 1,910
The differentially methylated CpG sites have been identified by two-sample t-test, with p ≤ 0.05 for 7 control samples and 7 case samples over 27,578 CpG sites. By including an outlying sample, case #5, the identified number of CpG sites is changed. Columns (a), (b) and (c) summarize the number of CpG sites identified to be differentially methylated under t-tests, with or without case #5: (a) t-tests identify corresponding sites only when case #5 is included; (b) t-test identify the sites regardless of inclusion of case #5; and (c) t-test identify the sites only when case #5 is excluded. The total column presents the number of identified CpG sites, with or without case #5 by three summary measures.
Table 1: Number of identified CpG sites as being differentially methylated in obesity data.