Table 1.
Demographic information for the participants.
| Preterm at term equivalent age (n = 79) | Controls (n = 22) | |
|---|---|---|
| PMA birth/weeks (mean and range) | 29+1 (23+2 –34+6) | 39+6 (38+1–41+5) |
| Birth weight/kg (mean and range) | 1.16 (0.550–1.635) | 3.550 (2.870–4.670) |
| PMA at image acquisition/weeks (mean and range)⁎ | 40 (37+5–42+5) | 42 (39.0–45+3) |
| Weight at image acquisition (mean and range)⁎ | 2.890 (2.060–3.920) | 3.628 (2.870–4.500) |
| Orbitofrontal head circumference at image acquisition (mean and range)⁎ | 34.7 (31.0–38.0) | 36.1 (32.6–39.0) |
| Gender/M:F | 41:38 | 10:12 |
| Complete course of antenatal steroidsa | 57 (72%) | 0 |
| Antenatal MgSO4 for fetal neuroprotection | 40 (51%) | 0 |
| Bronchopulmonary dysplasiab | 22 (28%) | n/a |
⁎
Indicates a statistically significant difference between groups (p ≤ 0.01).
a
Defined as first dose dexamethasone >24 h before birth.
b
Defined as need for supplemental oxygen and/or respiratory support at 36 weeks' PMA.