Estimating ancestral proportions in a multi-ethnic US sample: implications for studies of admixed populations

Table 1 Self-identification, family history, and ancestry biographical score based on AIMs

Self-identified	Family history data	n	Clusters (K)^a
			1	2	3	4	5
			Africa	Europe	Middle East	Central Asia	America
African Americans
	African American	179	0.83	0.05	0.05	0.05	0.01
	Some Caribbean ancestry	32	0.79	0.07	0.05	0.05	0.01
	African Caribbean	40	0.82	0.05	0.05	0.05	<0.01
	Some Native American ancestry	59	0.79	0.07	0.06	0.05	0.02
	Some European ancestry	17	0.70	0.10	0.12	0.05	<0.01
	Mixed ancestry	48	0.72	0.06	0.08	0.06	<0.01
	New immigrants from Africa	8	0.94	0.01	0.02	0.01	<0.01
	No family data	52	0.74	0.09	0.07	0.08	<0.01
	Total	435	0.80	0.07	0.06	0.05	0.01
	(SD)		(0.12)	(0.08)	(0.07)	(0.05)	(0.01)
Hispanic Americans
	Puerto Rican	181	0.18	0.27	0.30	0.14	0.07
	Other Caribbean or mixed Caribbean	35	0.35	0.27	0.20	0.11	0.04
	Latin American	22	0.20	0.20	0.19	0.17	0.19
	Caribbean/Latin American	6	0.09	0.27	0.31	0.16	0.13
	Puerto Rican with some European ancestry	15	0.19	0.33	0.26	0.14	0.05
	No data	34	0.17	0.30	0.24	0.17	0.09
	Total	293	0.20	0.27	0.27	0.14	0.08
	(SD)		(0.18)	(0.22)	(0.24)	(0.16)	(0.11)
European Americans
	Total	563	0.01	0.81	0.10	0.06	0.01
	(SD)		(0.01)	(0.17)	(0.13)	(0.08)	(0.01)

^aData for the clusters corresponding to Oceania and Far East Asia are not presented (<0.02). SD standard deviation.

ISSN: 1479-7364