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(A) Receiver-operator characteristic (ROC) curve along with 95% confidence bounds for calculating the cut-off value for serum procalcitonin (PCT) at initial presentation with acute fever to predict bacteraemia. The area under the ROC curve=0.724; standard error=0.0309; 95% confidence interval=0.681-0.763; P (area=0.5)=0.001. (B) Interactive dot diagram for serum PCT levels at initial presentation with acute fever. The horizontal line depicts the cut-off value.
