Table 2.
Mean (SD) or median (interquartile range) of neonatal characteristics of the sample
| Caucasian (n = 206) | African American (n = 71) | P for difference | |
|---|---|---|---|
| Neonatal sex (% males) | 51% | 49% | 0.81 |
| Gestational age at delivery (weeks) | 39.0 (37.6–39.9) | 38.7 (37.6–40.0) | 0.88 |
| Males | 39.0 (37.4–39.9) | 38.5 (37.1–39.9) | 0.89 |
| Females | 39.0 (37.9–39.9) | 39.1 (38.1–39.7) | 0.87 |
| Preterm (<37 gestational weeks) | 17.0% | 16.9% | 0.99 |
| Males | 21.9% | 17.1% | 0.55 |
| Birthweight (g) | 3,392 (549.7) | 3,086 (466.8) | 0.001 |
| Males | 3,451 (572.1) | 3,155 (486.4) | 0.008 |
| Females | 3,330 (521.1) | 3,018 (443.2) | 0.003 |
| Neonatal body mass (g) | 3,269 (535.9) | 3,009 (454.4) | 0.001 |
| Males | 3,327 (550.7) | 3,068 (470.4) | 0.015 |
| Females | 3,209 (515.8) | 2,951 (437.1) | 0.015 |
| Lean mass (g) | 2,924 (407.9) | 2,691 (378.9) | 0.0001 |
| Males | 3,003 (431.7) | 2,772 (380.9) | 0.007 |
| Females | 2,842 (365.9) | 2,613 (365.4) | 0.002 |
| Fat mass (g) | 313 (216.7–459.8) | 319 (240.7–396.9) | 0.51 |
| Males | 290 (206.9–440.4) | 282 (220.8–361.1) | 0.51 |
| Females | 331 (226.6–491.5) | 338 (269.3–419.9) | 0.73 |