Table 1 Characteristics of infants <29 weeks of gestation with cord blood and 36-week 25(OH)D levelsa
From: Vitamin D and bronchopulmonary dysplasia in preterm infants
Characteristics | Cord blood cohort (n=44) | 36-week post-menstrual age cohort (n=20) | P |
|---|---|---|---|
Median (IQR) | Median (IQR) | ||
Gestational age (weeks) | 26.6 (25.4–27.7) | 26.3 (24.9–27.8) | 0.52 |
Birth weight (g) | 870 (745–1050) | 785 (630–1010) | 0.13 |
25(OH)D level (ng ml−1) | 31.4 (22.0–38.3) | 61.6 (53.2–78.8) | <0.001 |
n (%) | n (%) | ||
25(OH)D <20 ng ml−1 | 8 (18) | 0 (0) | <0.05 |
25(OH)D <30 ng ml−1 | 20 (45) | 0 (0) | <0.001 |
Female sex | 22 (50) | 10 (50) | 1 |
Race/ethnicity a | 0.83 | ||
White | 27 (61) | 14 (70) | |
Black | 6 (14) | 2 (10) | |
Hispanic | 4 (9) | 0 (0) | |
Other | 4 (9) | 2 (10) | |
Singleton gestation | 26 (59) | 12 (60) | 1 |
Perinatal course | |||
Antenatal steroids | 44 (100) | 20 (100) | 1 |
Cesarean delivery | 28 (63) | 16 (80) | 0.25 |
Surfactant/mechanical ventilation | 42 (95) | 19 (95) | 1 |
Any respiratory support | 44 (100) | 20 (100) | 1 |
Sepsis | 3 (7) | 2 (11) | 0.63 |
NEC | 4 (9) | 3 (16) | 0.42 |
ROP | 16 (36) | 9 (47) | 0.41 |
IVH/PVL | 15 (34) | 9 (45) | 0.4 |
