Signs and Evidence

Making clinical sense of scientific data

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Diarrhea

HIV infection
 Positive likelihood ratio
3.70 ( Wood E et al. )
(average) 3.7
Negative likelihood ratio
0.88 ( Wood E et al. )
(average) 0.88
Appendicitis
 Positive likelihood ratio
0.71 ( Idris SA et al. )
(average) 0.71
Negative likelihood ratio
1.78 ( Idris SA et al. )
(average) 1.78


Sources used:

1.Wood E et al. Does this adult patient have early HIV infection?: The Rational Clinical Examination systematic review. JAMA. 2014 Jul 16;312(3):278-85
2.Idris SA et al. The sensitivity and specificity of the conventional symptoms and signs in making adiagnosis of acute appendicitis. Sudan journal of medical sciences. 4. 55-61