When we compared top CpG sites from the initial cohort (EOD1) of general inpatients with and without delirium [11], we found significant overlaps in the samples obtained from additional inpatient cohort (EOD2), such as LDLRAD4, DAPK1, TLN2, and IRF8 shown in Table 2. This evidence concerns the gene LDLRAD4 and delirium.