Signs and Evidence

Making clinical sense of scientific data

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Cloudy tympanic membrane

Otitis media acuta
 Positive likelihood ratio
11.00 ( R Rothman et al. )
(average) 11
Negative likelihood ratio
0.10 ( R Rothman et al. )
(average) 0.1


Sources used:

1.R Rothman et al. Does this child have acute otitis media? JAMA. 2003 Sep 24;290(12):1633-40