Receiver operating characteristic (ROC) curves of DcR3 and sTREM-1 for the diagnosis of bacterial meningitis. Areas under the ROC curve (AUC) are presented with 95% confidence intervals (CI). The AUC of DcR3 has been published previously . In order to compare the AUC of sTREM-1 with that of DcR3, the figure of DcR3 is presented here. DcR3: 0.831(95% CI 0.752–0.911); sTREM-1: 0.756 (95% CI 0.673-0.839).