3.6 The ROC curve of CD161+CD56+NK cells proportion to predict the occurrence of pSS
Combined with our above research results, we found that the proportion of CD161+CD56+NK cells in pSS patients decreased significantly, and it was related to the clinical manifestations, laboratory parameters and disease activities of pSS.Thus, we drew receiver operating characteristic (ROC) curve to evaluate the diagnostic value of CD161+CD56+NK cells for predicting the occurrence of pSS disease. The results showed that AUC(Area Under the Curve)=0.7375,P =0.0016(Fig 3C), and suggested that CD161+CD56+NK cells had a certain diagnostic value for the occurrence of pSS.