TABLE 1—
Mean Levels of African Genetic Ancestry in Unrelated African American Individuals by Hypertensive Status: US Family Blood Pressure Program, 1996–2000
| Normotensive |
Hypertensive |
|||||
| No. | Mean ±SD (95% CI) | No. | Mean ±SD (95% CI) | δ | Pa | |
| Maywood, IL | 135 | 0.80 ±0.10 (0.782, 0.818) | 60 | 0.81 ±0.11 (0.779, 0.836) | 0.007 | .654 |
| Jackson, MS | 21 | 0.79 ±0.12 (0.731, 0.841) | 262 | 0.79 ±0.12 (0.778, 0.809) | 0.007 | .804 |
| Forsyth County, NC | 42 | 0.76 ±0.13 (0.721, 0.802) | 150 | 0.79 ±0.11 (0.766, 0.803) | 0.023 | .257 |
| Birmingham, AL | 28 | 0.80 ±0.09 (0.770, 0.838) | 379 | 0.82 ±0.09 (0.812, 0.830) | 0.017 | .322 |
| Total African Americans | 226 | 0.79 ±0.11 (0.778, 0.806) | 851 | 0.81 ±0.11 (0.798, 0.812) | 0.013 | .103 |
Notes. CI = confidence interval; δ = mean difference in genetic ancestry between normotensive and hypertensive groups.
a
P value for t tests of difference in levels of genetic ancestry between normotensive and hypertensive individuals at each site and at all sites combined.