. Author manuscript; available in PMC: 2012 Nov 1.

Published in final edited form as: Alzheimers Dement. 2011 Nov;7(6):593–601. doi: 10.1016/j.jalz.2011.02.007

Table 1.

Demographic and mean (standard deviation) cognitive and functional scores by diagnostic group.

	Normals (N = 259)	MCI (N= 190)	Dementia (N= 458)
Age	74.2 (8.0)	76.7 (7.7)	77.5 (8.1)
Gender (% female)	62%	50%	60%
Education (years)	14.6 (3.2)	14.2 (4.0)	13.4 (3.7)
MMSE	29.04 (7.90)	26.48 (6.18)	20.94 (15.48)
CDR	.41 (.80	1.87 (1.49)	6.71 (4.22)
^*Episodic Memory	.14 (.76)	−.82 (.67)	−.1.57 (.63)
^*Executive Function	.10 (.61)	−.31 (.56)	−.97 (.70)
ECog-12	1.55 (.61)	2.44 (.92)	3.41 (.72)
ECog-39	1.37 (.46)	1.94 (.66)	3.06 (.76)

Values reported are Z scores (mean = 0.0, standard deviation = 1.0); the 66 participants with Questionable Cognitive Impairment are not included in this table.