Table 2: ROC data elaboration for each red cell parameter to distinguish LID from normal subjects and IDA cases.
Parameters | AUC | 95% CI | Cut-off | Sensitivity (%) | Specificity (%) | |
LID | Normal | |||||
Ret-He (pg) | 0.852 | 0.806-0.897 | < 33.15 | > 33.15 | 75.61 | 78.05 |
%Hypo-He | 0.891 | 0.853-0.928 | > 0.75 | < 0.75 | 78.05 | 84.12 |
%Hyper-He | 0.828 | 0.779-0.878 | < 1.15 | > 1.15 | 77.59 | 69.51 |
%MicroR | 0.844 | 0.795-0.893 | > 2.55 | < 2.55 | 73.17 | 81.92 |
RET-Y (ch) | 0.851 | 0.806-0.897 | < 1774.50 | > 1774.50 | 73.95 | 79.27 |
RBC-Y (ch) | 0.874 | 0.832-0.916 | < 1648.50 | > 1648.50 | 81.02 | 80.49 |
LID | IDA | |||||
Ret-He (pg) | 0.909 | 0.865-0.952 | > 28.75 | < 28.75 | 84.14 | 85.57 |
%Hypo-He | 0.905 | 0.863-0.948 | < 4.25 | > 4.25 | 80.76 | 84.14 |
%MicroR | 0.915 | 0.874-0.956 | < 6.55 | > 6.55 | 85.57 | 86.58 |
RET-Y (ch) | 0.909 | 0.865-0.952 | > 1624.00 | < 1624.00 | 85.36 | 84.61 |
RBC-Y (ch) | 0.913 | 0.872-0.954 | > 1531.50 | < 1531.50 | 85.36 | 85.57 |
sTfR (mg/l) | 0.909 | 0.865-0.953 | < 5.45 | > 5.45 | 84.61 | 85.36 |
LHD | 0.852 | 0.799-0.905 | < 10.25 | > 10.25 | 78.84 | 76.82 |
RSF | 0.848 | 0.791-0.905 | > 91.75 | < 91.75 | 80.48 | 75.00 |
MAF | 0.954 | 0.927-0.980 | > 9.25 | < 9.25 | 89.02 |
AUC: Area under curve; 95% CI: 95% confidence interval; TPR: True positive rate; FPR: False positive rate; LID: Latent iron deficiency; IDA: Iron deficiency anemia.