Participants’ clinical and socio-demographic characteristics
| GA at birth (weeks), median (IQR) | 30.29 (28.79–31.79) | ||
| Birth weight (g), median (IQR) | 1275 (980–1570) | ||
| PMA at MRI (weeks), mean (±SD) | 42.22 (0.79) | ||
| CA at assessment, median (IQR) | 4.63 (4.1−5.16) | ||
| Female, number (percentage) | 71 (47%) | ||
| IQ score, mean (±SD) | 108.03 (17.00) | ||
| IMD score quintiles | 1 (least deprived) | 36 | 23.8% |
| 2 | 26 | 17.2% | |
| 3 | 37 | 24.5% | |
| 4 | 35 | 23.2% | |
| 5 (most deprived) | 17 | 11.3% | |
| Maternal education ≥19 years, number (percentage) | 117 (77.5%) | ||
CA, corrected age at assessment; GA, gestational age; IMD, index of multiple deprivation; IQR, interquartile range; MRI, magnetic resonance imaging; PMA, postmenstrual age at neonatal MRI.