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This Article Full Text Full Text (PDF) Take the CME quiz: Vol. 14 No. 6, December 2005 Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services E-mail this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to My File Cabinet Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Neuspiel, D. R. Search for Related Content PubMed Articles by Neuspiel, D. R. Related Collections Weighing the Evidence

AAP Grand Rounds 14:62 (2005)
© 2005 American Academy of Pediatrics

Weighing the Evidence: Likelihood Ratios

The likelihood ratio (LR) is a measure of the accuracy of a diagnostic test: that is, the degree to which the test tests what you want it to test compared to the gold standard. The LR is a type of odds ratio: the probability of a given test result in patients with disease over the probability of the same result in patients without disease.¹

The LR can be used to calculate the posttest probability corresponding to a known pretest probability (prevalence) and test result using . . . [Full Text of this Article]

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