Fig. 3From: Reliability and validity of a vertical numerical rating scale supplemented with a faces rating scale in measuring fatigue after strokeReceiver operating characteristic (ROC) curves of the numerical rating scale-faces rating scale (NRS-FRS) at (a) test and (b) retest (NRS cutoff point of 1 as a criterion measure). The area under the curve (AUC) was 0.948 for test and 0.931 for retestBack to article page