Regression analysis showed that sex and age at death had no effect on the outcome of significant results found for presence of APOE ε4 when comparing AD pathology group with pathologically normal for age group (OR = 5.928; p = 0.011), possible PART group (OR = 0.071; p = 0.001) and definite PART group (OR = 0.081; p = 0.001). Here, APOE is linked to Alzheimer disease.