Table 3: ROC analysis of ultrasonographic measurements.

VariableAUCCut-off valueSensitivitySpecificity

CSA-prox (mm2)0.73579%51%
CSA-epi (mm2)0.83582%65%
CSA-dist (mm2)0.74572%71%
CSA-max (mm2)0.90693%68%

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