ALDH2 and ADH1B were in Hardy Weinberg equilibrium (p’s > .27), indicating no selection bias of this sample based on these genes. Symptom data were not available for 20 participants, including 10 participants who had never consumed alcohol. Two participants were also missing responses to the nausea symptom item and their total symptoms scores were calculated without this item included (total scores of 1 for both). An additional 29 individuals did not complete the SRE_5, including 14 individuals who had never had a full drink and 26 who had never been regular drinkers (i.e., consumed alcohol once a month for at least six months). This resulted in a sample size of 764 for symptom analyses and 735 for SRE_5 analyses.
