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Fig. 4 | Critical Care

Fig. 4

From: Diagnostic accuracy of C-reactive protein and procalcitonin in suspected community-acquired pneumonia adults visiting emergency department and having a systematic thoracic CT scan

Fig. 4

Procalcitonin ROC curve predicting definite community-acquired pneumonia diagnosis. AUC = 0.655. 95 % CI = 0.570 to 0.739. Youden’s index = 0.307 for an optimal PCT cut-off point at 0.13 μg/L ROC receiver operative characteristic, AUC area under the curve, CI confidence interval, PCT procalcitonin

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Critical Care

ISSN: 1364-8535