Cohort Characteristics.

<p>Differences between patients who died and those who survived were assessed by chi-squared for categorical data and Wilcoxon rank-sum tests for continuous data. IQR = inter quartile range.</p

30-day mortality according to biomarker levels on admission.

<p>Mortality was lower in patients with normal NT-proBNP and Troponin T levels than patients with elevated NT-proBNP alone (9/86, p = 0.0002) and both elevated NT-proBNP and Troponin T (14/62, p<0.0001).</p

1 year Kaplan-Meier survival curve for patients following community-acquired pneumonia stratified according to NT-proBNP level.

<p>Survival was worse in patients with high NT-proBNP levels (>220 pmol/L) compared to patients with normal NT-proBNP levels (≤220 pmol/L) (log-rank test, p<0.0001).</p

Receiver operating characteristic (ROC) curve for NT-proBNP and Pneumonia Severity Index class in 30-day mortality prediction.

<p>The area under the ROC curve = 0.8803 for NT-proBNP and 0.8701 for Pneumonia Severity Index class respectively.</p

Logistic regression analyses of cardiac biomarkers for 30-day mortality.

*<p>PSI = Pneumonia Severity Index.</p><p>Age-adjusted analyses analysed NT-proBNP and Troponin T separately with adjustment for patient age. Multiple-adjusted analyses include both biomarkers and the Pneumonia Severity Index class in the same model. High NT-proBNP and Troponin T are defined as >220 pmol/L and >50 ng/L respectively.</p