3.3 | The performance of PAF-AH activity measurements
in recognizing anaphylaxis
The result of the regression analysis is shown in figure 3. The optimal
cut-off point for PAF-AH activity to discriminate anaphylactic and
non-anaphylactic patients was 17.24 nmol/min/ml at the following
parameters:
- Sensitivity: 100%
- Specificity: 60%
- Accuracy: 93%
- Positive predictive value (PPV): 92.2%
- Negative predictive value (NPV): 100%
- Misclassification rate: 7%
- Area under the curve (AUC): 0.854
- Slope factor: 0.21