Table 4

Category-oriented likelihood ratios (LR) of signs and symptoms and laboratory results for organic diseases in patients with non-acute abdominal pain*

Patient Characteristics

Category-oriented LR(+)

Category-oriented LR(-)


Male sex

1.41

0.78

Age > 30 years

1.12

0.64

Age > 60 years

1.47

0.9

30 < Age < 60 years

1.08

0.88

Symptoms


History of blood in stool

1.5

0.89

Pain affecting sleep

1.3

0.77

No pain relief after defecation

1.1

0.72

No specific character to pain#

1.5

0.93

Weight loss > 1 kg in4 weeks

1.29

0.89

Laboratory tests


White blood cell count > 10000 mm-3

2.28

0.9

Erythrocyte sedimentation rate > 20 mm hour'

2

0.92

Low hemoglobin level

1.78

0.87


* Category-oriented LRs calculated using values of sensitivity and specificity derived from the study by Muris et al. [27]

# No description of the pain as one or more of the following: burning, cutting, terrible, feeling of pressure, dull, boring

Moosapour et al. BMC Medical Education 2011 11:94   doi:10.1186/1472-6920-11-94

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