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Global amyloid-β (Aβ) deposition (A) and cognitive executive function performance (B) in male and female APOE4 carriers and noncarriers. A sex-by-genotype interaction revealed that female APOE4 carriers possessed higher levels of Aβ compared to males (p=.037) and female noncarriers (p=.006) (A). There were no interactive effects or group differences in Stroop ratio, in which all older adult subgroups achieved similar levels of cognitive performance (B).
