APOE and Stroke: The 13 (eight positive and five negative) non-zero predictors from the aLASSO logistic regression were age, sex, heterozygous APOE-ɛ4 vs. none, homozygous APOE-ɛ4 vs none, MMSE score, family history of dementia, physically active vs. inactive, prevalent visual impairment, prevalent stroke, TBI, medication use, serotonin, and study center Düsseldorf vs. Bonn (Fig. 1A).