Table 4.
Optimal prognostic values of different blood parameters for iron deficiency anemia according to receiver operating characteristic curve.
| Indicators | Sensitivity % | Specificity % | Positive Predictive Value % | Negative Predictive Value % | Cut-Off | ROC Area |
|---|---|---|---|---|---|---|
| CHr (pg) | 87.5 | 92.9 | 89.1 | 91.8 | 27.2 | 0.929 |
| MCV (fL) | 83.9 | 92.9 | 88.7 | 89.7 | 76.6 | 0.922 |
| SF (ng/mL) | 79.2 | 93.9 | 88.4 | 88.5 | 12.9 | 0.887 |
| sTfR (mg/L) | 86.8 | 81.7 | 75.4 | 90.5 | 4.89 | 0.900 |
| FEP (μg/gHb) | 92.6 | 70.0 | 67.6 | 93.3 | 6.4 | 0.873 |
| Hb (g/L) | 96.4 | 60.7 | 62.1 | 92.2 | 105 | 0.804 |
CHr, reticulocyte hemoglobin content; MCV, mean corpuscular volume; SF, serum ferritin; sTfR, serum transferrin receptor; FEP, free erythrocyte protoporphyrin; Hb, hemoglobin.