Predicting the decision threshold
Predict the threshold for a fixed true/false positive rate.
You must have already completed either of the tasks:
- Activate the analysis report worksheet.
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On the Analyse-it ribbon tab, in the Diagnostic Accuracy group, click Predict, and then click:
Option Description Fixed FPF Predict the TPF (Sensitivity) and Threshold at a fixed FPF Fixed TPF (Sensitivity) Predicts the FPF and Threshold at a fixed TPF. Threshold Predict the TPF (Sensitivity) and FPF at a decision threshold. The analysis task pane Decision panel opens. - In the TPF / FPF / Threshold edit box, type the value at which to determine the other parameters.
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If you want a plot of the sensitivity and specificity for each decision
threshold:
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On the Analyse-it ribbon tab, in the Diagnostic Accuracy group, click Decision Threshold.
The analysis task pane Decision panel opens.
- In the Plot drop-down list, select Sensitivity / Specificity.
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On the Analyse-it ribbon tab, in the Diagnostic Accuracy group, click Decision Threshold.
- Click Recalculate.
