Fig. 1. Flow chart showing the process of selecting the study population.
CREDOS: Clinical Research Center for Dementia of South Korea, MCI: mild cognitive impairment, CDR: clinical dementia rating, CDRSB: clinical dementia rating sum of boxes, EUMC: Ewha Womans University Medical Center, BMI: body mass index, SNSB: Seoul Neuropsychological Screening Battery, APOE: apolipoprotein E.
