Cost-Saving Early Diagnosis of Functional Pain in Nonmalignant Pain: A Noninferiority Study of Diagnostic Accuracy

Figure 3

Visual comparison of peg and electronic algometry in discerning functional from nociceptive pain: receiver operating characteristic curves. Axes: -axis = 100%  −  specificity in %; -axis = sensitivity in %. Peg algometry: the red circles reflect the maximum of 21 possible test results given by the 0 to 10 pain rating at intervals of 0.5 points. Electronic algometry: the blue dashed line reflects the multitude of possible test results provided by the pressure pain measurement unit “kilopascal” with standard deviations ranging between 72 and 97 kilopascals.