The Increased Ratio of Blood CD56^bright NK to CD56^dim NK Is a Distinguishing Feature of Primary Sjögren’s Syndrome

Figure 2

ROC curve of the ratio of CD56^bright NK to CD56^dim NK. The curve plots the relationship between sensitivity and 1 − specificity for different cut-off levels. When 0.0487 was used as the cut-off point for the diagnostic score of suspected pSS patients, the maximum value of the Youden index was achieved as 0.596.