The Potential Diagnostic Biomarkers for the IgG Subclass in Coal Workers’ Pneumoconiosis

Figure 4

ROC analysis of the spirometry parameters and the IgG2/IgG3 ratio for distinguishing CWPs and DEWs. (a) ROC analysis of the spirometry parameters for CWP and DEW discrimination. (b) ROC analysis of the IgG2/IgG3 ratio, FEV1/FVC, and IgG2 for CWP and DEW discrimination. FVC: forced vital capacity; FEV1: forced expiratory volume in the first second; AUC: area under the curve.

(a)

(b)