Table 2.

Number (%) of subjects with one, mixed, and no (AD or macrocopic infarcts or neocortical Lewy body) pathology with no cognitive impairment, MCI, and probable AD.

		Clinical Diagnosis
		No cognitive impairment	Mild Cognitive Impairment	Probable Alzheimer's disease
		N=170	N=134	N=179
One pathology		77 (45.3%)	73 (54.5%)	86 (48.0%)
	AD path diagnosis	50 (29.4%)	47 (35.1%)	76 (42.4%)
	NIA- high	2 (1.2%)	10 (7.5%)	36 (20.1%)
	NIA- intermediate	48 (28.2%)	37 (27.6%)	40 (22.3%)
	Infarcts	25 (14.7%)	21 (15.7%)	8 (4.5%)
	LB	2 (1.2%)	5 (3.7%)	2 (1.1%)
Mixed pathology		16 (9.4%)	26 (19.4%)	82 (45.8%)
	AD + Infarcts	13 (7.6%)	23 (17.2%)	54 (30.2%)
	AD + LB	2 (1.2%)	3 (2.2%)	19 (10.6%)
	AD + Infarcts + LB	0	0	8 (4.5%)
	Infarcts + LB	1 (0.6%)	0	1 (0.6%)
No AD, infarcts or LB		77 (45.3%)	35 (26.1%)	11* (6.2%)

^*see text for pathologic diagnoses in those with probable AD without a pathologic diagnosis of AD, macroscopic infarcts or Lewy bodies