Table 1. Participant characteristics.
| Variables | African AmericansN or Mean (SD) 1 | European AmericansN or Mean (SD) 1 | p-value 2 |
|---|---|---|---|
| N | 112 | 91 | |
| Child sex | 53 females | 50 females | ns |
| 59 males | 41 males | ||
| Gestational age (weeks) | 38.84 (1.51) | 39.15 (0.91) | ns |
| Maternal age (years) | 25.75 (5.03) | 29.45 (4.50) | <.0001 |
| Birth weight (Kg) | 3.18 (0.47) | 3.52 (0.42) | <.0001 |
| Plasma Vitamin D (ng/ml) | 17.74 (6.03) | 20.68 (6.23) | 0.004 |
| Plasma folate (ng/ml) | 28.30 (18.40) | 32.84 (12.16) | 0.05 |
| Estimated lymphocyte fraction | 38.08 (12.11) | 42.73 (10.23) | 0.004 |
| Estimated granulocyte fraction | 48.72 (13.01) | 45.84 (10.51) | ns |
| Average of all CpG sites (M-value) | -2.69 (0.15) | -2.63 (0.15) | 0.01 |
1 Child race based on maternal report of parents’ race
2 Chi-square test (for child sex) and analysis of variance (for continuous variables) with race as predictor