Table 1.
Demographic characteristics of the 54 mother/infant dyads participating in the Newborn Epigenetics Study (NEST) study.
| Formula-feeding dyads (n = 34) | Breastfeeding dyads (n = 20) | |
|---|---|---|
| Maternal characteristics | Mean (SD) | |
| Prepregnancy body mass index, weight kg/height m2 | 27.9 (8.0) | 26.0 (7.0) |
| N (%) | ||
| Single parent | 6 (17.6) | 3 (15.0) |
| Race | ||
| White | 17 (50.0) | 15 (75.0) |
| Black | 15 (44.1) | 4 (20.0) |
| Asian/Pacific Islander | 2 (5.9) | 1 (5.0) |
| Hispanic/Latina | 0 (0.0) | 1 (5.0) |
| Education | ||
| ≤High school degree | 9 (26.5) | 3 (15.0) |
| Some college or technical degree | 5 (14.7) | 1 (5.0) |
| College or graduate degree | 20 (58.8) | 16 (80.0) |
| Annual household income | ||
| <$25,000 | 11 (32.4) | 2 (10.0) |
| $25,000–49,999 | 9 (26.5 | 5 (25.0) |
| >$50,000 | 14 (41.1) | 13 (65.0) |
| Infant characteristics | Mean (SD) | |
| Age, months | 8.1 (2.2) | 8.2 (2.1) |
| Weight-for-length z-score | 0.3 (2.8) | −0.2 (1.5) |
| N (%) | ||
| Sex, female | 15 (44.1) | 9 (45.0) |
| Race | ||
| White | 16 (47.1) | 14 (70.0) |
| Black | 15 (44.1) | 6 (30.0) |
| Asian/Pacific Islander | 3 (8.8) | 0 (0.0) |
| Hispanic/Latino(a) | 1 (2.9) | 1 (5.0) |