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Acute Otitis Media: Likelihood Ratios

Introduction: None written.

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Tags: Infection Pediatrics Tag this Diagnosis.

Prevalence

Population / Calculator	Prevalence	Comments / Study / Link
Children 0-2 years visiting a pediatrician	17.4%	JAMA. 2003 Sep 24;290(12):1633-40. PMID: 14506123
Children 2-5 years visiting a pediatrician	18.1%	JAMA. 2003 Sep 24;290(12):1633-40. PMID: 14506123
Children 6-10 years visiting a pediatrician	10.5%	JAMA. 2003 Sep 24;290(12):1633-40. PMID: 14506123
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The likelihood ratios of findings for Acute Otitis Media 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.)

Good Negative Likelihood Ratio
Finding	Result	+LR	-LR
[ + ] Upper Respiratory Tract Infection	+ 0 -	1.4	0.1
Study: JAMA. 2003 Sep 24;290(12):1633-40. PMID: 14506123

Good Positive Likelihood Ratio
Finding	Result	+LR	-LR
[ + ] Ear Rubbing	+ 0 -	3.2	0.7
Study: JAMA. 2003 Sep 24;290(12):1633-40. PMID: 14506123