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The cutoff values, sensitivity, and specificity for the antibodies analyzed in the receiver operating characteristic curves
| Cutoff | Sensitivity (%) | Specificity (%) | |
|---|---|---|---|
| aEM IgG | 4 (S/Co) | 1 | 100 |
| aPT IgM | 9 U/mL | 34 | 76 |
| aPE IgM | 13 U/mL | 61 | 63 |
| aPE IgG | 13 U/mL | 33 | 71 |
The cutoff values were chosen when the Youden's index (sensitivity + specificity − 1) reached its maximum value.
