Signs and Evidence

Making clinical sense of scientific data

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Abdominal Mass

Small bowel obstruction
 Positive likelihood ratio
2.20 ( Bohner H et al. )
(average) 2.2
Negative likelihood ratio
0.90 ( Bohner H et al. )
(average) 0.9
Aneurysma aorta abdominalis
 Positive likelihood ratio
12.00 ( Lederle FA et al. )
(average) 12
Negative likelihood ratio
0.72 ( Lederle FA et al. )
(average) 0.72


Sources used:

1.Bohner H et al. Simple data from history and physical examination help to exclude bowel obstruction and to avoid radiographic studies in patients with acute abdominal pain. Eur J Surg. 1998 Oct;164(10):777-84
2.Lederle FA et al. The rational clinical examination. Does this patient have abdominal aortic aneurysm? JAMA. 1999 Jan 6;281(1):77-82