Research Article

Comparison of CRP, Procalcitonin, Neutrophil Counts, Eosinophil Counts, sTREM-1, and OPN between Pneumonic and Nonpneumonic Exacerbations in COPD Patients

Figure 2

Receiver operating characteristic (ROC) curves of CRP, PCT, Neu, and OPN for differentiating between pneumonic and nonpneumonic exacerbations in AECOPD patients.