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Good Positive and Negative Likelihood Ratios

Good Positive Likelihood Ratio

Pleural Effusion: Likelihood Ratios

Introduction: None written.

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Tags: Pulmonary Tag this Diagnosis.

The likelihood ratios of findings for Pleural Effusion 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 Positive Likelihood Ratio
Finding	Result	+LR	-LR
[ + ] Chest X-Ray	+ 0 -	inf	0.6
NOTE: Sensitivity for the right hemithorax was ~50% while on the left it was ~25%! Study: J Am Coll Cardiol. 2000 May;35(6):1638-46 PMID: 10807471
[ + ] Pleural Rub	+ 0 -	5	1
Study: Cleveland Clinic Journal of Medicine April 2008 vol. 75 no. 4 297-303 http://www.ccjm.org/content/75/4/297.full.pdf+html