Magnetic Resonance Imaging versus Electrophysiologic Tests in Clinical Diagnosis of Lower Extremity Radicular Pain

Table 3

Clinical accuracy of MRI and electrodiagnosis in sciatica.

Paraclinical study	Sensitivity	Specificity	PLR^†	NLR^x	PPV^⋆	NPV^#
MRI	89%	11%	1	1	58%	39%
Electrodiagnosis	85%	39%	0.95	1.08	89%	87%

^†PLR: Positive likelihood ratio.
^xNLR: Negative likelihood ratio.
^⋆PPV: Positive predictive value.
^#NPV: Negative predictive value.