TABLE 3.
Iron enrichment, weight, and hemoglobin measures across gestation1
| Visit 1 (weeks 14–16) | Visit 2 (weeks 16–18) | Visit 3 (weeks 24–26) | Visit 4 (weeks 33–35) | Visit 5 (weeks 35–37) | Delivery (weeks 35–41) | Neonate | |
|---|---|---|---|---|---|---|---|
| Trimester | 2 | 3 | |||||
| n | 15 | 15 | 13 | 13 | 13 | 15 | 15 |
| Weight, kg | 68.9 ± 21.2 | 70.1 ± 20.6 | 70.2 ± 17.1 | 77.7 ± 18.8 | 77.9 ± 19.1 | 79.8 ± 20.7 | 3.31 ± 0.5 |
| Hb, g/dL | 12.2 ± 1.9 | 11.9 ± 1.5 | 11.2 ± 1.0 | 11.0 ± 1.3 | 11.5 ± 1.3 | 11.6 ± 1.2 | 13.7 ± 2.3 |
| 57Fe Δ% excess | — | 3.2 ± 2.1 | 2.9 ± 2.1 | 2.1 ± 1.3 | 2.1 ± 1.3 | 2.1 ± 1.2 | 2.2 ± 1.4 |
| 57Fe, mg | — | 1.0 [0.6, 1.8] | 0.9 [0.5, 1.6] | 0.7 [0.4, 1.3] | 0.7 [0.4, 1.4] | 0.8 [0.5, 1.3] | 0.1 ± 0.04 |
| 57Fe RBC enrichment, % | — | 8.7* [5.0, 15.4] | 7.7 [4.5, 13.3] | 5.5 [2.9, 10.4] | 5.9 [3.0, 11.7] | 7.2 [4.4, 11.7] | 0.5 ± 0.3 |
| 58Fe Δ% excess | — | — | — | — | 2.4 [1.6, 3.7] | 2.8 [2.1, 3.9] | 3.6 ± 1.9 |
| 58Fe, mg | — | — | — | — | 0.2 [0.1, 0.2] | 0.2 [0.1, 0.2] | 0.01 ± 0.01 |
| 58Fe RBC enrichment, % | — | — | — | — | 20.3 ± 8.7* | 21.8 ± 10.5 | — |
1
Data presented as mean ± SD for normally distributed data or geometric mean [95% CI] for nonnormally distributed data. Hb, hemoglobin; Δ%, delta percentage.
*
Indicates the values that represent iron absorption.