Fig. 2

Representation in the ROC space of neonatal studies. Representation in the ROC space of studies on PCT for diagnosis of sepsis in neonatal age, divided by cut-off subgroup, and summary sensitivity and specificity points along with their 95% confidence and prediction regions. (ROC, receiver operating characteristic). Legend: PCT neon – cut-off <2 PCT neon – cut-off > 2.5 PCT neon – cut-off =2/2.5