TABLE 1.

Characteristics of African-Americans and Caucasians in the Emory cohort of 37 subjects with clinically diagnosed and pathologically confirmed AD.

Variable	African-Americans (n=18)	Caucasians (n=19)	p value
Age at death (yrs)+	73.8 ± 12.4	75.1 ± 10.4	0.75‡
Duration (yrs)+^	9.4 ± 4.2	10.8 ± 4.1	0.34‡
PMI (hrs)+	17.6 ± 13.0	12.2 ± 6.8	0.12‡
Gender n (%)			0.64‡
Male	6 (33%)	5 (26%)
Female	12 (67%)	14 (74%)
APOE genotype n (%)^^
ε4/4	6 (33%)	3 (17%)
ε3/4	8 (44%)	10 (56%)
ε3/3	4 (22%)	4 (22%)
ε2/4	0	1 (6%)
APOEε4-positive n (%)^^			0.61‡
Yes	14 (78%)	14 (78%)
No	4 (22%)	4 (22%)
Hypertension n (%)䫨	14/16 (88%)	2/15 (13%)	<0.001
Education (yrs)§	14.6 ± 3.3	14.9 ± 2.4	0.77‡

All percentages are rounded to the nearest whole number

APOE: apolipoprotein E

PMI: postmortem interval

⁺Mean ± standard deviation

^{^}Time from diagnosis to death; Data not available for 2 Caucasians

^{^^}Data not available for 1 Caucasian

^䫨Data not available for 2 African-Americans and 4 Caucasians

^§Data not available for 6 African-Americans and 6 Caucasians

^‡Statistically non-significant