APOE and hypertensive disorder: There were no significant differences observed in the ratio of male to female (χ2(2) = 4.10, p = 0.129), proportion of ethnicity (χ2(6) = 10.97, p = 0.089), body mass index (BMI) (F(2, 181) = 2.00, p = 0.138), or higher history of hypertension (χ2(2) = 1.56, p = 0.459) among the diagnoses, and these characteristics were not significantly different between groups when stratified by the APOE genotype.