Table 1.
Demographic and Descriptive Characteristics of Subjects by Birth Outcome
| Normal birth weight infant (n=776) | SGA infant (n=24) | Preterm infant (n=77) | p-value | |
|---|---|---|---|---|
| Weighted percentage, % | 87.5 | 2.1 | 10.4 | — |
| Mean age±SE, years | 29.0±0.2 | 29.0±0.9 | 29.4±0.7 | 0.85 |
| Race | 0.26 | |||
| White | 62.8 | 36.3 | 66.4 | |
| Latino/Hispanic | 20.1 | 34.1 | 14.4 | |
| Black | 14.4 | 29.5 | 15.7 | |
| Other | 2.8 | 0.0 | 3.4 | |
| Annual household income <$20,000 | 21.6 | 36.5 | 18.6 | 0.36 |
| Education | 0.31 | |||
| <High school diploma | 21.2 | 26.2 | 32.7 | |
| High school diploma | 28.2 | 25.7 | 27.4 | |
| Some college and beyond | 50.5 | 48.1 | 39.9 | |
| Married/living with partner | 69.1 | 75.2 | 64.4 | 0.65 |
| Positive smoking history | 42.3 | 43.8 | 54.8 | 0.52 |
| Hypertension diagnosis | 9.7 | 14.8 | 20.1 | 0.10 |
| History of Breastfeeding | 62.7 | 41.9 | 57.6 | 0.25 |
| BMI, kg/m2 | 27.9±0.3 | 29.7±1.5 | 25.6±1.0 | 0.04a |
a
Significant difference between the preterm group and both SGA and normal-weight group. There is no statistically significant difference in the mean BMI in the SGA and normal- weight groups.
BMI, body mass index; SE, standard error; SGA, small for gestational age.