Fig. 2

ROC curves for GCA patients as compared to non-GCA disease control groups. In the Aarhus cohort, biomarker levels were compared between treatment-naïve GCA patients (solid grey, N=52) and patients who were suspected of GCA, but received a different diagnosis (look-alike, N=18). In the GPS cohort, treatment-naïve GCA patients (dotted purple, N=48) were placed against infection controls (N=16). In addition to the area under the curve (AUC), optimal sensitivity (Sens), specificity (Spec) and cut-off values were calculated according to the Youden index. ROC receiver operating characteristic