APOE and dementia: The 212 individuals (201 MCI/11 dementia, age 73 ± 6.8; 44% female; 16.2 ± 2.8 years of education; 71% APOE ε4 carrier) who had observed 18-month data available did not differ in baseline characteristics compared to those without observed 18-month data, and showed similar estimates for person-specific slopes (figure e1, A, C, and E; doi.org/10.5061/dryad.qjq2bvqf2).