Figure 1:

Flowchart shows participant selection. AC = anticholinergic treatment, AD = Alzheimer disease, ADAS-Cog = Alzheimer’s Disease Assessment Scale-Cognitive subscale, ADNI = Alzheimer’s Disease Neuroimaging Initiative, ChEI = cholinesterase inhibitor, EMCI = early mild cognitive impairment, HC = healthy control participants, LMCI = late mild cognitive impairment, MCI = mild cognitive impairment.