Characteristics of the neonates included in this study
| Characteristics | Total (n = 63) |
|---|---|
| Gestational age, mean in weeks (range) | 28.7 ± 1.7 (25.1–30.9) |
| Birth weight, mean in grams (range) | 1146 ± 335 (650–1910) |
| Male, No. (%) | 36 (57.1) |
| Birthset: singleton/twins, No. (%) | 51 (81.0)/12 (19.0) |
| PPROM, no (%)a | 13 (20.6) |
| Antenatal steroids, No. (%)b | 47 (74.6) |
| Race, No. (%) | |
| Caucasian | 50 (79.4) |
| Other | 12 (9.0) |
| Mixed | 1 (1.6) |
| Apgar at 5 minutes, median (range) | 9 (5–10) |
| Late-onset sepsis positive blood culture, No. (%) | 23 (36.5) |
| Days of ventilation, median (range) | 5 (0–23) |
| IVH, No. (%) | |
| No IVH | 46 (73.0) |
| IVH I | 5 (7.9) |
| IVH II | 7 (11.1) |
| IVH III | 4 (6.3) |
| IVH IV | 1 (1.6) |
| Educational level of mother, No. (%)c | |
| Low | 14 (22.2) |
| Middle | 21 (33.3) |
| High | 26 (41.3) |
| Postmenstrual age, mean in weeks (range)d | 41.6 ± 1.0 (39.6–44.7) |
↵a PPROM indicates preterm prolonged rupture of membranes.
↵b Two doses of steroids administered 24 hours before labor.
↵c Education level according to the CBS (Statistics Netherlands, The Hague, The Netherlands; http://www.cbs.nl/en-GB/menu/home/default.htm).
↵d Postmenstrual age at the time of the scanning.