Figure 3

ROC curves of PCT D0 (A) and ΔPCT _{D-1, D0} *(B) for differentiating between patients with or without nosocomial infection in the ICU: AUROCC = 0.80; 95% CI, 0.68–0.91 and 0.89; 95% CI, 0.79–0.98, respectively. ICU: intensive care unit; PCT: procalcitonin; ΔPCT_{D-1, D0} = PCT D0 – PCT D-1; D0: day when infection is suspected. *available in 45 out of the 70 included patients.