. Author manuscript; available in PMC: 2010 Aug 1.

Published in final edited form as: J Int Neuropsychol Soc. 2010 Apr 7;16(4):630–639. doi: 10.1017/S1355617710000330

Table 1.

Demographic characteristics by group

	Normal control (n = 82)	Amnestic MCI (n = 22)	Non-amnestic MCI (n = 16)
	Mean (SD)	Mean (SD)	Mean (SD)	p value ^*
Age	74.26 (9.38)	74.86 (7.05)	77.13 (8.53)	.50
Education	16.02 (2.27)	16.50 (2.13)	15.19 (3.17)	.25
Gender (M/F)	30/52	14/8	6/10	.07
DRS Total T-score	55.44 (4.49)	49.77 (5.69)	51.25 (5.37)	<.001^a,^b
APOE (ε4−/ε4+)	53/23	13/7	11/5	.92

Superscripts indicate which groups are signifi cantly different at p < .05, assessed using post hoc Tukey tests

= NC > amnestic MCI

= NC > non-amnestic MCI.

MCI = mild cognitive impairment; DRS = Mattis Dementia Rating Scale. APOE = apolipoprotein. Genotype data were not available for eight participants (six cognitively normal and two amnestic MCI participants).