Table 1.
Sample characteristics of full analysis sample.
| Mean | Range | |
|---|---|---|
|
Demographic |
||
| GA at birth (weeks) | 31.81 | 23.00 – 36.86 |
| PMA at first scan (weeks) | 33.77 | 27.29 – 36.86 |
| PMA at second scan (weeks) | 40.93 | 37.00 – 45.14 |
| Corrected age at follow-up (months) | 20.75 | 18.30 – 26.86 |
| Sex (% female) | 43% | |
| IMD | 21.10 | 2.57 – 53.18 |
| CSPS | 21.11 | 11.00 – 28.00 |
|
Clinical and radiological (neonatal) |
||
| Days of mechanical ventilation | 3.89 | 0 – 80 |
| Days CPAP | 11.00 | 0 – 61 |
| Days TPN | 10.82 | 0 – 162 |
| NEC | 4.96% | |
| PDA | 3.31% | |
| No brain abnormality | 30% | |
| Incidental findings of minor lesions† | 48% | |
| Incidental findings of major lesions†† | 22% | |
|
Behavioural (18 months) |
||
| Bayley-III Cognitive composite score | 98.22 | 55.00 – 125.00 |
| Bayley-III Language composite score | 95.43 | 50.00 – 141.00 |
| Bayley-III Motor composite score | 98.41 | 52.00 – 124.00 |
| CBCL internalising T-score | 52.73 | 50.00 – 63.25 |
| CBCL externalising T-score | 51.50 | 50.00 – 66.00 |
Notes: GA = gestational age; PMA = postmenstrual age; IMD = Index of multiple deprivation; CBCL = Child Behavior Checklist; CSPS = Cognitively stimulating parenting scale; CPAP = continuous positive airway pressure; TPN = Total parenteral nutrition; NEC = necrotising enterocolitis; PDA = patent ductus arteriosis; † e.g., subdural haemorrhage, isolated subependymal cysts, scattered punctate lesions; †† e.g., major lesions within white matter, cortex, cerebellum, or basal ganglia, brain < 1st centile.