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Sensitivity, specificity, positive, negative predictive value and Youden’s index (YI) of five parameters in patients with iron deficiency anemia (IDA) and beta-thalassemia trait (βTT).
| Parameters & diagnosis | Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative Predictive value (%) | Youden’s Index | |
|---|---|---|---|---|---|---|
| RBC count | IDA | 86 | 90 | 73 | 80 | 74 |
| βTT | 88 | 85 | 88 | 93 | ||
| MCV | IDA | 78 | 83 | 88 | 85 | 66 |
| βTT | 85 | 80 | 85 | 89 | ||
| RDW | IDA | 80 | 86 | 88 | 65 | 64 |
| βTT | 84 | 78 | 90 | 76 | ||
| RDWI | IDA | 88 | 86 | 91 | 88 | 83 |
| βTT | 94 | 88 | 99 | 97 | ||
