Table 2.
Exposures measured in the 2nd trimester, 3rd trimester, in maternal blood at birth, and cord blood.
| Measurement Time | Exposure variable | N | Mean ± SD | Median (10th, 90th percentile) |
|---|---|---|---|---|
| 2nd Trimester | Manganese (μg/dL) | 485 | 1.46 ± 0.49 | 1.39 (0.95, 2.05) |
| Adj. hemoglobin (g/dL)a | 485 | 11.59 ± 0.88 | 11.6 (10.6, 12.66) | |
| Serum ferritin (ng/mL) | 475 | 39.24 ± 33.39 | 31 (10.5, 79.44) | |
| MCV (fL) | 485 | 91.59 ± 4.49 | 91.9 (86.3, 96.3) | |
| RDW (fL) | 482 | 13.99 ± 1.48 | 13.7 (12.81, 15.1) | |
| 3rd Trimester | Manganese (μg/dL) | 424 | 1.88 ± 0.63 | 1.81 (1.18, 2.62) |
| Adj. hemoglobin (g/dL) | 424 | 11.53 ± 0.92 | 11.6 (10.3, 12.67) | |
| Serum ferritin (ng/mL) | 222 | 18.74 ± 17.53 | 14 (5.05, 35.56) | |
| MCV (fL) | 424 | 92.38 ± 5.02 | 92.75 (86.43, 98) | |
| RDW (fL) | 424 | 13.69 ± 0.93 | 13.5 (12.7, 14.8) | |
| Maternal at Birth | Manganese (μg/dL) | 479 | 2.47 ± 0.95 | 2.29 (1.43, 3.6) |
| Adj. hemoglobin (g/dL) | 451 | 11.43 ± 1.68 | 11.5 (9.5, 13.3) | |
| Serum ferritin (ng/mL) | 457 | 37.28 ± 74.86 | 25.7 (8.6, 66.04) | |
| MCV (fL) | 411 | 91.48 ± 6.27 | 91.3 (84.8, 98.1) | |
| RDW (fL) | 344 | 14.48 ± 3.21 | 14 (12.7, 16.4) | |
| Cord Blood | Manganese (μg/dL) | 452 | 4.86 ± 2.33 | 4.43 (2.86, 7.03) |
N: Number; SD: Standard Deviation; Adj: Adjusted
a
Hemoglobin values after adjustment for elevation.