Measure
|
Duration of breast milk feeding
|
Verbal IQ
|
Performance IQ
|
Perinatal factors |
Sex | 0.06 | 0.05 | −0.02 |
Multiple birth | −0.09 | 0.11 | 0.12 |
Birth weight | −0.06 | −0.06 | 0.162-160
|
Gestation | −0.00 | −0.01 | 0.08 |
IUGR | 0.11 | 0.05 | −0.03 |
Apgar score (5 min) | 0.01 | 0.07 | 0.172-160 |
Social/family factors |
Maternal age | −0.02 | 0.06 | 0.00 |
Maternal education | 0.232-165
| 0.392-165
| 0.202-165 |
Family type | 0.142-150
| 0.08 | 0.01 |
Family income | 0.162-160
| 0.252-165
| 0.142-150 |
Maternal smoking during pregnancy | −0.162-160
| −0.142-150
| −0.10 |
Child ethnicity | −0.152-160
| −0.352-165
| −0.162-160 |
Birth order | −0.05 | −0.04 | −0.01 |