BCHE (and/or surrounding region, 3q26) has previously been associated with behavioral conditions relevant to fast beta EEG and AUD, including ADHD49–52 and cocaine use/problems.53 To determine whether the significant signal observed for fast beta EEG was accounted for by any of these disorders, we carried out three separate post hoc GWAS of fast beta EEG, each adjusted for one of the three disorders: DSM-IV AD, DSM-IV ADHD, and DSM-IV CoD by including it as a covariate in the model. All analyses conducted in the current study are summarized in Supplementary Table S1.
