TABLE 1.

Clinician MCI staging criteria.

	Early MCI	Middle MCI	Late MCI
	n = 18	n = 89	n = 18
CDR	0 or 0.5	0.5	0.5
FAQ	Difficulty in ≤3 activities, but still independent	Difficulty in ≤7 activities, but still independent	Difficulty in ≥4 activities, requires modest assistance
Neuropsychological Impairment	Impairment in 1 or mild impairment in 2*	Impairment in 1 or more domain, must include memory	Impairment in memory and 1 additional domain

*If mild impairment in 2 domains, CDR and FAQ must be 0. Neuropsychological impairment in any domain was defined as standard scores falling outside 1.5 standard deviations of the age-adjusted normative means. CDR, Clinical Dementia Rating; FAQ, Functional Activities Questionnaire; MCI, mild cognitive impairment.