Maternal and infant characteristics of all and screened infants
| Overall | Screened | Adj. p value | |||
| Yes | No | P value | |||
| n | 2873 | 875 | 1998 | ||
| BW (g, median IQR) | 3379 (3065–3700) | 3340 (2870–3860) | 3390 (3130–3656) | 0.0717 | |
| GA (weeks, median, IQR) | 39.4 (38.71, 40.29) | 39.14 (37.86, 40) | 39.57 (38.86, 40.43) | <0.0001 | |
| Male (%) | 50.5 | 52.5 | 49.7 | 0.174 | |
| C-section (%) | 24.8 | 32.7 | 21.3 | <0.001 | <0.001* |
| Delayed cord clamping at least 2 min (%) | 91.3 | 90.5 | 92 | 0.332 | |
| Delayed cord clamping <60 s (%) | 2.9 | 4.3 | 2.2 | 0.002 | 0.043*† |
| Maternal age (years, median, IQR) | 29 (24–34) | 31 (26–36) | 28 (23–33) | <0.0001 | |
| Primiparous (%) | 34 | 30.3 | 35.6 | 0.005 | |
| Hispanic (%) | 72.3 | 73.4 | 71.9 | 0.404 | |
| Race (%) | 0.117 | ||||
| White | 78.7 | 78.3 | 78.9 | ||
| Black | 4 | 3.7 | 4.2 | ||
| Asian | 13.7 | 15.5 | 12.9 | ||
| Infant of diabetic mother (%) | 19.3 | 62.9 | 0.2 | <0.001 | <0.001† |
| Preterm (%) | 4.1 | 13.5 | 0 | <0.001 | <0.001† |
| Large for GA (%) | 7 | 22.7 | 0.2 | <0.001 | <0.001† |
| Small for GA (%) | 6.9 | 18.4 | 1.8 | <0.001 | <0.001† |
| Any risk factor (%) | 31.9 | 100.0 | 2.1 | <0.001 | <0.001† |
| Multiple risk factors (%) | 5 | 16.5 | 0.1 | <0.001 | <0.001† |
| Exclusive breast feeding (%) | 60.4 | 49.4 | 65 | <0.001 | <0.001† |
| NICU (Neonatal Intensive Care Unit) admission for hypoglycaemia (%) | 0.3 | 0.8 | 0.1 | <0.005 | 0.013† |
*Adjusted for GA.
†Adjusted for C-section.
BW, birth weight; GA, gestational age.