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Table 9 Results of receiver operating characteristic (ROC) analysis for PCT and CRP for discrimination among etiologies

From: Inflammatory response in mixed viral-bacterial community-acquired pneumonia

PCT AUC 95% CI Significance
Bacterial-involved (bacterial and mixed) vs viral 0.640 0.557-0.723 p = 0.002
Bacterial vs viral 0.621 0.522-0.720 p = 0.02
Mixed vs viral 0.651 0.544-0.758 p = 0.007
CRP AUC 95% CI Significance
Bacterial-involved (bacterial and mixed) vs viral 0.579 0.494-0.665 NS
Mixed vs bacterial 0.626 0.514-0.738 p = 0.027
Mixed vs viral 0.657 0.546-0.768 p = 0.005
Mixed vs overall bacterial and viral 0.642 0.537-0.747 p = 0.004