Investigation of the ability of the Pneumonia Severity Index to accurately predict clinically relevant outcomes: a European study  B. Renaud, E. Coma, J. Hayon, M. Gurgui, C. Longo, M. Blancher, I. Jouannic, S. Betoulle, E. Roupie, M.J. Fine  Clinical Microbiology and Infection  Volume 13, Issue 9, Pages 923-931 (September 2007) DOI: 10.1111/j.1469-0691.2007.01772.x Copyright © 2007 European Society of Clinical Infectious Diseases Terms and Conditions

Fig. 1 Receiver operating characteristic (ROC) curves of the Pneumonia Severity Index (PSI) for the PORT study and the two European cohorts. The ROC curves plot the sensitivity (y axis) vs. 1-specificity (x axis) of the PSI score to predict 28-day all-cause mortality. The area under the ROC curve (AUC) quantifies the overall discriminatory power of the PSI for predicting mortality. The AUCs differed across the three study populations (p <0.01) and were largest for the Pneumonia PORT and Pneumocom-2 populations, and smallest for the Pneumocom-1 population. Clinical Microbiology and Infection 2007 13, 923-931DOI: (10.1111/j.1469-0691.2007.01772.x) Copyright © 2007 European Society of Clinical Infectious Diseases Terms and Conditions