| | Range | Number | Mean, SE | | Range | Number | Mean, SE |
|---|
Sex | | M = 12 | | AS | 0–24 | 13 | 12, 2.43 |
F = 7 |
GA | 24w3d–28w2d | | 27w2d, 2d | Gc circ | 0–17.4 | 8 | 1.44, 0.91 |
BW | 402–1226 | | 825, 54.7 | Gc CLD | 0–38 | 3 | 2.32, 2.0 |
SD | − 3.95–0.17 | | − 1.36, 0.31 | Opi | 0–7 | 13 | 3.37, 0.58 |
dSD | − 2.3–0.97 | | − 0.61, 0.15 | Bf | 0.1–7.6 | 19 | 4.39, 0.48 |
Mv | 1–60 | 19 | 32.4, 5.15 | In | 0–1.6 | 15 | 0.48, 0.10 |
Hc | 30–84 | 19 | 57.4, 4.45 | PDA | | 7 | |
- M male, F female, GA gestational age, BW birth weight (g), SD standard deviation of body weight, dSD change in SD scores between 0 and 2 months, Mv duration of mechanical ventilation with intra-tracheal intubation between 0 and 2 months after birth (days), Hc heel cut procedure for blood examination between 0 and 2 months after birth (times), AS antenatal steroid administration (mg), Gc circ glucocorticoid administration between 0 and 2 months after birth as a treatment for circulatory collapse (mg/kg prednisolone), Gc CLD glucocorticoid administration between 0 and 2 months after birth as a treatment for or prevention of CLD (mg/kg prednisolone), Opi opioid administration between 0 and 2 months after birth (mg fentanyl), Bf breast fed volume between 0 and 1 month after birth (mL/kg) (kg was calculated by birthweight + bodyweight at 2 months/2), In indomethacin administration for PDA closure (mg/kg), PDA underwent surgery to close a patent ductus arteriosus between 0 and 2 months after birth
