Finally, when ABE was cross-tabulated simultaneously with menthol exposure and G6PD deficiency (Table 4), it was clear that menthol exposure was strongly associated with ABE, but statistically significant only among those whose known G6PD phenotype was unknown (OR = 25.88; 95% CI = 2.845,235.8) or definitely deficient (OR = 73.94; 95% CI = 5.425, > 999). Here, G6PD is linked to G6PD deficiency.