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ROC analysis of ultrasonographic measurements.
| Variable | AUC | Cut-off value | Sensitivity | Specificity |
|---|---|---|---|---|
| CSA-prox (mm2) | 0.73 | 5 | 79% | 51% |
| CSA-epi (mm2) | 0.83 | 5 | 82% | 65% |
| CSA-dist (mm2) | 0.74 | 5 | 72% | 71% |
| CSA-max (mm2) | 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.
