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Table 1: Subject characteristics
Normal Cognition Probable AD χ²/T Test Value^a PValue, Cohen D or ϕ
Number 19 13 
Age (SD and range) 82.31 ± 3.87 83.1 ± 3.35 −.63 .53, .23
(76.17–93.34) (77.22–88.32) 
Male/female 8/11 8/5 1.17 .47, .28
Caucasian/AA 18/1 13/0 .71 .59, .41
Education (beyond 12th grade/12th grade) 11/8 8/5 .04 .56, .84
Modified MMSE 94.73 ± 4.44 88.9 ± 6.31 3.08 <.01, 1.11
(85–99) (76–97) 
Hypertension (±) 11/8 10/3 1.23 .23, .27
Heart disease 17/2 10/3 .92 .32, .34
Type II diabetes mellitus 17/2 10/2 .25 .63, .09
MRI infarcts (±) 12/7 9/4 .13 .53, .72
Small vessel ischemic disease 11/8 8/5 .04 .57, .84


a df = 30.

	Normal Cognition	Probable AD	χ²/T Test Value^a	PValue, Cohen D or ϕ
Number	19	13
Age (SD and range)	82.31 ± 3.87	83.1 ± 3.35	−.63	.53, .23
	(76.17–93.34)	(77.22–88.32)
Male/female	8/11	8/5	1.17	.47, .28
Caucasian/AA	18/1	13/0	.71	.59, .41
Education (beyond 12th grade/12th grade)	11/8	8/5	.04	.56, .84
Modified MMSE	94.73 ± 4.44	88.9 ± 6.31	3.08	<.01, 1.11
	(85–99)	(76–97)
Hypertension (±)	11/8	10/3	1.23	.23, .27
Heart disease	17/2	10/3	.92	.32, .34
Type II diabetes mellitus	17/2	10/2	.25	.63, .09
MRI infarcts (±)	12/7	9/4	.13	.53, .72
Small vessel ischemic disease	11/8	8/5	.04	.57, .84