Activity 2: Rare Event Detection

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Explore how the event rate and separation between score distributions change the interpretation of diagnostic performance. All threshold metrics use a decision threshold of 0.50.

Event prevalence

50.0%

0.5% 50%

Class separation

0.50

0.05 0.50

Event distributions Selected scenario

Threshold performance Decision threshold 0.50

ROC curves Discrimination

Precision-recall curves Positive predictive value