Table 1 Baseline demographic and clinical characteristics
Variable | P-PN (n = 42) | Control (n = 50) |
|---|---|---|
Infant characteristics | ||
Female sex | 17 (40) | 17 (34) |
Gestational age, median (IQR), wks | 32 (31–32) | 32 (31–33) |
30+ 0–31+ 6 weeks’ gestation | 15 (36) | 19 (38) |
32+ 0–33+ 6 weeks’ gestation | 27 (64) | 31 (62) |
Singleton | 18 (43) | 32 (64) |
Twins | 18 (43) | 15 (30) |
Triplets | 6 (14) | 3 (6) |
Apgar at 5 min, median (IQR) (n = 41/50) | 9.0 (8.0–9.0) | 8.5 (8.0–9.0) |
Birth weight, mean (SD), g | 1717 (289) | 1749 (329) |
Birth weight z-score, mean (SD) | −0.2 (0.7) | −0.1 (0.7) |
Birth length, mean (SD), cm | 42 (2) | 42 (2) |
Birth head circumference, mean (SD), cm | 30 (2) | 30 (2) |
Maternal characteristics | ||
Maternal age, mean (SD), yr | 32 (5) | 31 (5) |
Vaginal birth | 14 (33) | 15 (30) |
Caesarean section | 28 (67) | 35 (70) |
Antenatal steroids - any | 24 (57) | 35 (70) |