Table 1.

Baseline Subject Characteristics

	Indianapolis		Ibadan
	Under 75 (n = 179)	75 and Older (n = 174)	Under 75 (n = 697)	75 and Older (n = 271)
Age	69.9 ± 2.7	81.3 ± 5.1	68.4 ± 2.7	81.7 ± 6.3
Education*	9.7 ± 2.9	8.8 ± 3.5	109 (15.6%)	54 (19.9%)
Male (%)	72 (40.2%)	55 (31.6%)	224 (32.1%)	118 (43.5%)
Smoking History	121 (67.6%)	98 (56.3%)	145 (20.8%)	86 (31.7%)
Hypertension	124 (69.3%)	110 (63.2%)	174 (25.0%)	57 (21.0%)
ApoE – have 2 ε4 alleles	8 (4.5%)	8 (4.6%)	30 (4.3%)	15 (5.5%)
ApoE – have 1 ε4 allele	65 (36.3%)	58 (33.3%)	239 (34.3%)	96 (35.4%)
ApoE – have 0 ε4 alleles	106 (59.2%)	108 (62.1%)	428 (61.4%)	160 (59.0%)
ApoE – have any ε4 alleles	73 (40.8%)	66 (37.9%)	269 (38.6%)	111 (41.0%)

^*Mean years of education (SD) for Indianapolis; Number of subjects (%) with any schooling for Ibadan.