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Demographics
| Median (range) | |
|---|---|
| Gestational age at birth (wk) | 34 (23–40) |
| Preterm | 31 (23–37) |
| Term | 40 (38–40) |
| Post conceptional age at study (wk) | 40 (34–60) |
| Preterm | 38 (34–55) |
| Term | 46 (35–60) |
| Birth weight (kg) | 1.8 (.5–4.0) |
| Preterm | 1.3 (.5–3.8) |
| Term | 3.2 (2.1–4.0) |
| Weight at study (kg) | 3.0 (1.7–7.9) |
| Preterm | 2.5 (1.7–5.5) |
| Term | 3.9 (3.0–7.9) |
