Fig. 1.

Receiver-operating characteristic (ROC) Curve for peripheral white blood cell (WBC) count of more than 10,000 (109/l), fever > 38˚C and WBC rise of more than 10% for diagnosis of bacterial meningitis in patients with severe traumatic brain injury (TBI). The area under curve (AUC) was calculated to be 0.478 (95% CI: 0.371-0.584) for peripheral WBC count, 0.517 (95% CI: 0.410-0.624) for fever and 0.460 (95% CI: 0.351-0.569) for WBC rise which demonstrates a low diagnostic accuracy for these parameters