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Table 5 Accuracy, cutoff, sensitivity and specificity values for the score of change (Minimally Important Change) and cut-off score for Exercise Adherence Rating Scale - Brazilian Portuguese (EARS-Br) in relation to Global Perceived Effect (GPE) (n = 83)

From: The Brazilian Portuguese version of the Exercise Adherence Rating Scale (EARS-Br) showed acceptable reliability, validity and responsiveness in chronic low back pain

 Patients that improvedAUC (C.I. 95%)CutoffSensitivitySpecificity
EARS-Br (change score) vs GPE56 (22.48, SD = 3.07)0.82 (0.73–0.91)5.50.930.48
EARS-Br (cutoff score) vs GPE56 (22.48, SD = 3.07)0.89 (0.79–0.98)17.50.820.89
  1. ROC> 0.9: high accuracy, 0.7 < ROC < 0.9: moderate accuracy, 0.5 < ROC < 0.7: low accuracy and ROC < 0.5: random outcome
  2. AUC = Area Under the Curve
  3. SD = standard deviation
  4. GPE = Global Perceived Effect scale