TABLE 2

Logistic regression analysis and diagnostic accuracy of biomarker levels at hospital admission for prediction of bacterial aetiology in 267 hospitalised patients with community-acquired pneumonia

BiomarkerUnivariate analysisArea under the curve
OR (95% CI)p-valueAUC (95% CI)p-value
CRP1.90 (1.16–3.12)0.0110.66 (0.56–0.75)0.003
PCT1.44 (1.15–1.81)0.0020.67 (0.58–0.77)0.001
Calprotectin2.15 (1.05–4.41)0.0360.63 (0.52–0.73)0.022

CRP: C-reactive protein; PCT: procalcitonin.