Table 1 Participants’ neonatal and socio-demographic details
| Â | Assessed at 15Â years | Assessed 19 at years | Â | Assessed at both time points | |||
|---|---|---|---|---|---|---|---|
VLBW | Control | VLBW | Control | VLBW | Control | ||
Number of participants | 40 | 56 | 44 | 60 | Â | 30 | 37 |
 Males (%) | 18 (45) | 21 (37) | 18 (41) | 25 (42) |  | 11 (37) | 14 (38) |
Background information | |||||||
 Birthweight (grams) M (SD) | 1204 (236)*** | 3713 (500) | 1212 (234)*** | 3698 (501) |  | 1223 (250)*** | 3766 (544) |
 Gestational age (weeks) | 29.18 (2.65)*** | 39.61 (1.15) | 29.25 (2.54)*** | 39.72 (1.27) |  | 29.43 (2.60)*** | 39.51 (1.17) |
 Age (years-months) M (SD) | 15–2 (0–6) | 15–5 (0–5) | 19–7 (0–7) | 19–8 (0–6) | Time 1 | 15–2 (0–6) | 15–5 (0–5) |
|  |  |  |  |  | Time 2 | 19–9 (0–8) | 19–7 (0–6) |
 IQ. M (SD) |  |  | 89.00 (12.54)*** | 99.85 (10.62) |  | 86.33 (13.52)*** | 100.14 (11.03) |
 SES (1–5). M (SD) | 3.15 (1.25) | 3.59 (1.04) | 3.39 (1.38) | 3.70 (0.95) |  | 3.27 (1.33) | 3.65 (0.92) |