Signs and Evidence

Making clinical sense of scientific data

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Red tympanic membrane

Otitis media acuta
 Positive likelihood ratio
1.10 ( Sandi Pirozzo et al. )
(average) 1.1
Negative likelihood ratio
0.98 ( Sandi Pirozzo et al. )
(average) 0.98


Sources used:

1.Sandi Pirozzo et al. Acute otitis media. West J Med. 2001 Dec; 175(6): 402–407