Fig. 4

PD-Monitor FT objective score could potentially discriminate early stage PD from NC. The ROC curves illustrated a strong separation between the early PD patients (H-Y 1) and NC. Right affected side: AUC = 0.963, P = 0.000, accuracy = 92.5%, sensitivity = 94.4%, specificity = 91.8%, cutoff value = 0.029; Left affected side: AUC = 0.899, P = 0.000, accuracy = 89.6%, sensitivity = 66.7%, specificity = 98.0%, cutoff value = 0.141. PD, Parkinson’s disease; NC, normal controls; H-Y, Hoehn and Yahr stage; ROC, Receiver operating characteristics; AUC, area under the ROC curve