Table 1.
Estimates of European ancestry and proportional African ancestries in African Americans by US region of birth
| U.S. region of birth | Numbera | European ancestry (%) | Total African ancestry (%)b | |||||
|---|---|---|---|---|---|---|---|---|
| Mandenka | Yoruba | Bantu | Biaka | Mbuti | San | |||
| West | 58 (58) | 19.9 ± 8.5 | 18.9 ± 4.1 | 64.0 ± 5.3 | 13.7 ± 4.3 | 1.1 ± 0.8 | 0.2 ± 0.2 | 2.0 ± 0.5 |
| South | 12 (10) | 24.0 ± 15.6 | 22.6 ± 5.7 | 60.0 ± 9.5 | 14.2 ± 5.4 | 1.1 ± 0.7 | 0.2 ± 0.4 | 1.9 ± 1.0 |
| Midwest | 4 (4) | 19.4 ± 10.2 | 19.4 ± 2.0 | 64.0 ± 5.5 | 13.1 ± 5.5 | 0.9 ± 0.9 | 0.3 ± 0.3 | 2.2 ± 0.7 |
| Southwest | 2 (2) | 17.0 ± 6.5 | 21.4 ± 0.7 | 65.1 ± 1.0 | 10.5 ± 0.3 | 1.1 ± 0.4 | 0.1 ± 0.0 | 1.7 ± 1.0 |
| All | 136 (128) | 21.9 ± 12.2 | 19.2 ± 4.0 | 63.7 ± 4.9 | 13.8 ± 3.8 | 1.0 ± 0.8 | 0.2 ± 0.3 | 2.0 ± 0.6 |
aNumbers in parentheses are those used for estimation of African ancestries after removal of eight individuals with high values of European ancestry; birth-location information was missing for 60 individuals.
bBased on frappe analysis of African genotypes only (n = 128).