Table 1.

Descriptive characteristics of MCI Participants (N = 4,284)

	Mean (SD)	Range (Minimum-Maximum)
Demographic Variables
Age	73.9 (8.7)	50–109
Education	15.4 (3.1)	1–30
Sex (% female)	52%	---
Race (% White)	78%	---
Informant-rated FAQ Score
Mean FAQ	0.34 (.46)	0–3
Cognition
Mini Mental State Exam	27.2 (2.3)	16–30
Logical Memory IIA Delayed	6.7 (4.7)	0–22
Recall
Digit Span Backward	5.9 (2.1)	0–12
Semantic Fluency (animals)	16.0 (5.0)	2–48
Trail Making Test Part A (sec)	43.6 (21.6)	1–150
Trail Making Test Part B (sec)	136.7 (75.6)	13–300
Digit Symbol	37.9 (11.9)	0–93
Cognitive composite	0 (1)	−3.9–3.1
Mood
Geriatric Depression Scale (GDS)	2.3 (2.5)	0–15

FAQ = Functional Activities Questionnaire.