Table 1. Demographic and neonatal characteristics.
| Characteristics | n = 42 (16 boys,26 girls) |
| Neonatal characteristics | |
| GA at birth (weeks) | 29.71 (27.29–31.57) |
| Birth Weight (grams) | 1203 (877–1558) |
| SGA (number, %) | 5 (12%) |
| IVH grade I–II (number, %) | 3 (7%) |
| Illness severity day 1 (SNAP-II) | 8.5 (0–14.75) |
| Skin-breaking procedure (number) | 74 (45–136) |
| Mechanically ventilated (number, %) | 25 (59.5%) |
| Days of mechanical ventilation (number) | 2 (0–10) |
| Culture proven infection (number, %) | 11 (26) |
| Surgery ≥1 (number, %) | 8 (19) |
| Morphine (dose in µg1) | 0.00 (0–664) |
| Non-mechanically ventilated | 0.00 (0–0) |
| Mechanically ventilated | 205 (42–1332) |
| School Age characteristics at scan | |
| Chronological Age (years) | 7.76 (7.71–8.04) |
| Weight (kg) | 23.1 (21.3–26.3) |
| Height (cm) | 124 (120–126.6) |
| Head circumference (cm) | 51.5 (50–52.7) |
| Mild/moderate white matter injury(number, %)2 | 6 (14%) |
| WISC-IV Full scale score (IQ) | 101 (91–108) |
Median and interquartile range are given unless otherwise specified.
1
Cumulative daily dose adjusted for daily body weight.
2
Mild to moderate white matter injury (≤3 lesions) on MR scan at school age (1 child with mild white matter injury at 7 years had IVH grade 1 on neonatal ultrasound).
GA, gestational age; SGA, small for gestational age (<10%tile); %, percent; IVH, intraventricular hemorrhage grade I–II diagnosed on neonatal ultrasound; SNAP-II, score for neonatal acute physiology; WISC-IV, Wechsler Intelligence Scale for Children –4th Ed.