Fig 2. Microvascular cerebral perfusion in apolipoprotein ε4 positive (APOEε4+) and apolipoprotein ε4 negative (APOEε4-) adults.

Data expressed as individual data and means ± standard deviation. APOEε4+ means represented by white bars and APOEε4- means represented by gray bars. Within each group, females are represented as white circles and males are represented as black squares. P-value indicates result of independent samples t-test comparing cerebral perfusion between APOEε4+ (n = 32) and APOEε4- (n = 47) adults. Effect size calculated as Cohen’s d.