1)
Amnestic MCI-single cognitive domain (memory impairment only).
(2)
Amnestic MCI-multiple domain (memory impairment plus nonmemory deficits, such as in language, executive function, or visuospatial function)—corresponding to AACD.
(3)
Non-amnestic MCI-single domain (nonmemory deficit).
(4)
Non-amnestic MCI-multiple domain (impairment in at least two cognitive domains other than memory).