Fig. 5.

ROC curve and AUC analysis for hospitalisation decisions within the derivation (a) and validation (b) cohorts following presentation to the Emergency Department. AUC area under the curve, CRB-65 severity score for community-acquired pneumonia, CRP C-reactive protein, LR- negative likelihood ratio, LR+ positive likelihood ratio, MR-proADM mid-regional proadrenomedullin, NEWS National Early Warning Score, NPV negative predictive value, OR diagnostic odds ratio, PCT procalcitonin, PPV positive predictive value, ROC receiver operating characteristic, qSOFA quick Sequential Organ Failure Assessment, SOFA Sequential Organ Failure Assessment