Table 5 :
Study Sample Characteristics by Serum Ferritin Quartiles based on physiological threshold
| ≤ 75 SF at 35 PMA | >75 SF at 35 PMA | P-value | |
|---|---|---|---|
| Covariate | (N=50) | (N=28) | |
| Male | 23 (46.0%) | 15 (53.6%) | 0.685 |
| Gestational Age (wks) | 25.7 (1.43) | 25.8 (1.52) | 0.925 |
| Birth weight (g) | 778 (160.2) | 787 (208.6) | 0.825 |
| Growth Rate (g/day) | 24.0 (3.12) | 24.5 (4.44) | 0.617 |
| Total Iron Intake (mg) | 654 (237.9) | 602 (297.3) | 0.398 |
| Total Amount of Blood (mL) | 40.1 (39.6) | 62.2 (50.7) | 0.036 |
| Total ml/kg of Blood | 52.4 (47.9) | 54.1 (40.0) | 0.874 |
| Hemoglobin (gm/dL) | 12.3 (1.6) | 12.2 (1.54) | 0.887 |
| Hematocrit (%) | 38.6 (4.34) | 39.2 (4.87) | 0.617 |
| Serum Iron (mcg/dL) | 86.3 (40.3) | 90.8 (38.1) | 0.635 |
| TIBC (mcg/dL) | 349 (63.2) | 316 (75.9) | 0.047 |
| Iron Saturation (%) | 25.4 (11.6) | 29.3 (12.1) | 0.167 |
| Transferrin (mg/dL) | 234 (42.5) | 212 (50.9) | 0.047 |
| Serum Ferritin (ng/mL) | 44.8 (14.9) | 125 (57.8) | <0.001 |
Mean (SD) for continuous variables, or N (%) for categorical variables Hematological and iron values at a PMA of 35 weeks (± 1 week). 5 patients with SF > 400 at 35 PMA were removed from this analysis