Table 1.
Cohort Maternal and Infant Baseline Characteristics.
| Very preterm infants (N=392) | |
|---|---|
| Maternal Age, mean years (SD) | 29.2 (5.4) |
| Maternal hypertension, n (%) | 154 (39.3%) |
| Maternal diabetes, n (%) | 22 (5.6%) |
| Antenatal steroids, n (%) | 361 (92.1%) |
| Magnesium, n (%) | 329 (83.9%) |
| Infant Hispanic/Latino, n (%)* | 36 (7.2%) |
| Infant race, n (%)** | |
| Black | 104 (26.5%) |
| White | 255 (65.1%) |
| Asian | 8 (2.0%) |
| Other | 20 (5.1%) |
| Singleton, n (%) | 252 (64.3%) |
| Male sex, n (%) | 210 (53.6%) |
| Apgar score at 5 min <5, n(%) | 48 (12.4%) |
| Gestational age, mean weeks (SD) | 29.3 (2.5) |
| Birth weight, mean g (SD) | 1293.0 (448.9) |
| Patent ductus arteriosus, n (%) | 101 (25.8%) |
| Rates of culture positive sepsis, n (%) | 43 (11.0%) |
| Bronchopulmonary dysplasia, n (%)† | 166 (42.4%) |
| Retinopathy of prematurity, n (%) | 134 (34.2%) |
| Germinal matrix/intraventricular hemorrhage (IVH), n (%) | 68 (17.4%) |
| Postmenstrual age at MRI scan, mean weeks (SD) | 42.7 (1.4) |
*
29 mothers chose not to respond to ethnicity question
**
6 mothers did not respond to infant race question
†
Bronchopulmonary dysplasia was defined as any respiratory support, including nasal cannula or higher, irrespective of oxygen need, at 36 weeks postmenstrual age 25.