Fig. 2

Calibration and discrimination of the risk score for BSI in FUO patients. The predicted (mean ± SD) rates of bloodstream infection (triangles and dotted line) at each risk score vs. observed rates of BSI (solid circles) are presented in a. Grey bars show the number of patients (right Y-axis) analyzed per score. Discrimination of the BSI status by risk score using area under the receiver operating curve analysis are presented in b. BSI bloodstream infection, CRP C-reactive protein, FUO fever of unknown origin, PCT procalcitonin, SD standard deviation