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Area under receiver operating characteristic curve (95% confidence interval) for predicting mortality of PSI and CURB-65 scores by age group in 4534 hospitalized cases with community-acquired pneumonia in a tertiary teaching hospital in Barcelona, Spain. PSI, Pneumonia Severity Index; CURB-65, Confusion, Urea >7 mmol/l, Respiratory rate ≥30/min, Blood pressure (systolic blood pressure <90 or diastolic blood pressure ≤60 mmHg) and age ≥65 years.
