Table 1. Characteristics of Study Population.

Ancestry-Sex	Age (SD)	RSB=0 (%)	RSB=1 (%)	RSB=2 (%)	STD (%)	Total
AD
AA-women	40 (8)	213 (47)	151 (33)	90 (20)	151 (33)	454
AA-men	43 (9)	414 (38)	466 (43)	207 (19)	328 (30)	1087
EA-women	38 (11)	196 (44)	165 (37)	83 (19)	131 (30)	444
EA-men	39 (11)	465 (47)	398 (40)	129 (13)	238 (24)	992
non-AD
AA-women	41 (9)	158 (68)	52 (23)	21 (9)	43 (19)	231
AA-men	43 (10)	205 (51)	160 (40)	36 (9)	76 (19)	401
EA-women	38 (11)	83 (58)	41 (29)	18 (13)	33 (23)	142
EA-men	39 (11)	88 (51)	69 (40)	16 (9)	36 (21)	173