| Pre-term infants | Full-term infants | p-value |
n | 18 | 18 | |
Male % | 72 | 78 | 0.7 |
Both parents white northern Europeans % | 17 | 100 | <0.001 |
Birth weight kg | 2.01±0.35 | 3.55±0.35 | <0.001 |
Gestational age weeks | 34±2 | 40±1 | <0.001 |
Post-natal age days# | 7 (4.5–10) | 34 (29–38) | <0.001 |
Post-conceptional age weeks | 35±1 | 45±1 | <0.001 |
Test weight kg | 2.12±0.26 | 4.55±0.43 | <0.001 |
Crown–heel length cm | 43.6±2.2 | 55.7±2.1 | <0.001 |
far,1 Hz | 199±24 | 257±60 | <0.001 |