TABLE 4.
Associations between placental Fe transport proteins and indicators of neonatal Fe status
| Neonatal Fe status | Placental target | Correlation | P | Partial correlation | P | na |
|---|---|---|---|---|---|---|
| Cord sTfR | PCFT protein | −0.36 | <0.001 | −0.37 | <0.001 | 95 |
| Cord SF | PCFT protein | 0.21 | <0.05 | 0.22 | <0.05 | 93 |
| Cord SF | FLVCR1 mRNA | −0.17 | 0.07 | −0.25 | <0.05 | 101 |
| Cord sTfR | TfR1 protein | 0.18 | <0.05 | 0.10 | 0.28 | 130 |
| Cord EPO | LRP1 protein | −0.25 | <0.05 | −0.22 | <0.05 | 100 |
Associations between neonatal Fe status indicators and placental protein variables were tested with Pearson’s correlation and partial correlation tests. Raw and partial correlations and respective P values are shown. Partial correlation tests controlled for placental weight, birth weight, gestational age at birth (wk), maternal gynecologic age at conception (yr), maternal pregnancy weight gain, maternal prepregnancy body mass index, and maternal race. EPO, erythropoietin. aCorresponds to the partial correlation tests.