Table 1 shows the percentages of participants who endorsed each of the six alcohol-related symptoms by ALDH2 genotype. ALDH2 was significantly associated with all six symptoms, including flushing or blushing (χ2 = 245.57, 2 df, p < .001), feeling very sleepy (χ2 = 57.11, 2 df, p < .001), having headaches, head pounding or throbbing (χ2 = 113.32, 2 df, p < .001), having nausea (χ2 = 80.77, 2 df, p < .001), having heart palpitations (χ2 = 184.14, 2 df, p < .001), and breaking out into hives (χ2 = 30.77, 2 df, p < .001). Post-hoc analyses indicated significant differences across all three ALDH2 genotypes for prevalence rates of sleepiness, headaches, nausea, and heart palpitations (p’s < .01). The other two symptoms, flush or blush and hives, were only significantly different across those who had no ALDH2*2 alleles and those who had one or two ALDH2*2 alleles (p’s < .001).
