Signs and Evidence

Making clinical sense of scientific data


Electrodiagnostic testing (EDX)

Carpal tunnel syndrome
 Positive likelihood ratio
3.64 ( Fowler JR et al. )
2.59 ( Atroshi I et al. )
(average) 3.12
Negative likelihood ratio
0.26 ( Fowler JR et al. )
0.41 ( Atroshi I et al. )
(average) 0.34

Sources used:

1.Fowler JR et al. The Sensitivity and Specificity of Ultrasound for the Diagnosis of Carpal Tunnel Syndrome: A Meta-analysis. Clin Orthop Relat Res. 2011 Apr; 469(4): 1089–1094
2.Atroshi I et al. Diagnostic properties of nerve conduction tests in population-based carpal tunnel syndrome. BMC Musculoskelet Disord. 2003; 4: 9