Diagnostic Value of Ultrasonography and Magnetic Resonance Imaging in Ulnar Neuropathy at the Elbow

Table 3

ROC analysis of ultrasonographic measurements.

Variable	AUC	Cut-off value	Sensitivity	Specificity
CSA-prox (mm^2)	0.73	5	79%	51%
CSA-epi (mm^2)	0.83	5	82%	65%
CSA-dist (mm^2)	0.74	5	72%	71%
CSA-max (mm^2)	0.90	6	93%	68%

ROC: receiver operating characteristic; CSA: cross-sectional area; prox: proximal; epi: epicondyle; dist: distal; max: maximum; AUC: area under the curve.