Statistics with Stan - the basics of sensitivity, specificity, NPV and PPV and the LMA in obesity
Anaesthesia Coffee Break
Low prevalence limits PPV
They emphasize that low prevalence (like difficult intubation) yields poor PPV even for good tests.
Thanks for covering the dreaded statistics objectives for the exam!
The diagrams and info are from these articles.
Aust Prescr 2003;26:111–3
Moving beyond sensitivity and speci!city: using likelihood ratios to help interpret diagnostic test
and
Critical Care 2004 8:508-512
Statistics review 13: Receiver operating characteristic curves
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