Figure 3From: Predictive value of procalcitonin decrease in patients with severe sepsis: a prospective observational studyReceiver operating characteristic curve for procalcitonin (PCT) concentration and positive blood culture. Areas under the curve are 0.76 (95% confidence interval [CI] 0.66 to 0.86, P < 0.001) for PCT on day 0 and 0.74 (95% CI 0.64 to 0.84, P < 0.001) for PCT at 72 hours.Back to article page