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Good Positive and Negative Likelihood Ratios

Osteoarthritis of the Knee: Likelihood Ratios

Introduction: None written.

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Prevalence

Population / Calculator	Prevalence	Comments / Study / Link
Visits to Primary Care for Knee Pain	34%	Ann Intern Med. 2003 Oct 7;139(7):575-88. PMID: 14530229
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The likelihood ratios of findings for Osteoarthritis of the Knee are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %.	Post-Test Probability (Predictive Value): %.	Switch to display mode.
Note that calculating probabilities from more than one** finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)