Table 3: Analysis of the ROC curves of the parameters considered IDA vs. β-thalassemia.

Sensibility 90%

AUC

Cut off

95% CI

Specificity

MCHC

0.535

28.2

0.371-0.694

10.0

RDW

0.989

15.8

0.891-0.991

85.0

CHr

0.595

24.1

0.428-0.747

55.0

% IPO

0.702

25.2

0.537-0.836

30.0

Precheratocytes

0.808

1.2

0.652-0.914

70.0

Pencil-cells

0.807

1.75

0.652-0.914

65.0