Fig. 2

The AUC of the combined ROC curve for the two models of ESR and CRP was 0.803; the AUC of the combined ROC curve for the three models of ESR, CRP, and PLT/MPV ratio was 0.887. ESR erythrocyte sedimentation rate, CRP C-reactive protein, AUC areas under the ROC curves, PLT platelet count, MPV mean platelet volume, ROC receiver operating characteristic