Fig. 1From: A feasibility study of objective outcome measures used in clinical trials of freezing of gaitGraphical representation of the area under the receiving operating characteristics (AUC) analysis, showing sensitivity and specificity for each surrogate marker comparing PD-control (no FOG) vs. ON-FOG (A), PD-control vs. OFF-FOG (B), and ON-FOG vs. OFF-FOG (C)Back to article page