In this study, a quantitative trait, theta band (4–5 Hz) amplitude of EROs, and a dichotomous variable (i.e., alcohol dependent vs. not) were the phenotypes tested. Age and gender were treated as covariates. False discovery rate, FDR (Benjamini and Hochberg 1995; Storey and Tibshirani 2003), was calculated to correct for multiple comparisons with the method developed by Storey (2003).
