Figure 4:Receiver operating characteristic (ROC) curves of serum CAPAP and C-reactive protein (CRP) in discriminating between patients with severe acute pancreatitis and mild acute pancreatitis. The values (± standard errors) of the areas under the ROC curves (AUC) and the values of the best cut-off limits are also reported. The optimal operating points relative to the best cut-off values are highlighted on the ROC curves..