APOE and Alzheimer disease: AD patients versus age‐matched controls, excluding the two APOE SNPs: odds ratio [OR] = 1.54, 95% confidence interval [CI] = [1.45–1.63], P = 1.55 × 10−47; including APOE SNPs: OR = 2.55, 95% CI = [2.39–2.72], P = 2.09 × 10−176).