Fig. 3. ROC curve of MMSE score for developing aspiration on the radionuclide salivagram in patients with brain lesions. The optimal cut-off value (dots on the curves) for the MMSE score, which was obtained from the maximal Youden index, was a value of 7 for aspiration on the radionuclide salivagram (AUC=0.855; 95% CI, 0.689–0.953; p<0.0001; sensitivity 72.73%, specificity 100%). ROC, receiver operating characteristic; MMSE, Mini-Mental State Examination; AUC, area under the ROC curve.