Diagnostic Implication and Clinical Relevance of Dermatomal Somatosensory Evoked Potentials in Patients with Radiculopathy: A Retrospective Study

Table 3

Logistic regression of lumbar IVF and spinal canal stenosis with DSEP findings.

Dependent variable	Independent variable	Odds ratio
L4 DSEP results^†	Pixel count of IVF at L4/5 level	0.988	0.001
	Grade of IVF stenosis at L4/5 level	0.968	0.904
	Pixel count of thecal sac area	1.001	0.253
	Grade of spinal canal stenosis	0.780	0.471
L5 DSEP results^†	Pixel count of IVF at L5/S1 level	0.993	0.029
	Grade of IVF stenosis at L5/S1 level	1.268	0.417
	Pixel count of thecal sac area	0.999	0.396
	Grade of spinal canal stenosis	0.638	0.148

. ^†Classified as normal or abnormal results. DSEP, dermatomal somatosensory evoked potentials; IVF, intervertebral foramen.