Demographic characteristics of the 2005 cohorts
| ELBW infants (N=257) | Controls (N=220) | |
|---|---|---|
| Outborn* % (n) | 18.7 (48) | 0 (0) |
| Birth weight (g), mean (SD) | 751 (145) | 3574 (480) |
| Gestational age (weeks), mean (SD) | 25.7 (2.3) | 39.7 (1.3) |
| Female % (n) | 51.4 (132) | 53.2 (117) |
↵* Not born in a high-risk level III perinatal centre.
ELBW, extremely low birth weight.