Pre- and post-test probability: Difference between revisions

Revision as of 13:04, 27 June 2015

Revision as of 17:18, 2 July 2015

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| Direct quotients from reference group ||<span style="color:DarkGreen;">Most straightforward: Predictive value equals probability ||<span style="color:DarkRed;"> Usually low: Separate reference group required for every subsequent pre-test state ||<span style="color:DarkGreen;"> Available both for [[binary classification|binary]] and [[Continuity (mathematics)|continuous]] values ||

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! By [[Likelihood-ratio testratios in diagnostic testing|likelihood ratio]]

| Derived from [[sensitivity and specificity]] || Post-test odds given by multiplying pretest odds with the ratio ||<span style="color:DarkGreen;"> Theoretically limitless ||<span style="color:DarkGreen;"> Pre-test state (and thus the pre-test probability) does not have to be same as in reference group ||<span style="color:DarkRed;">

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