OBJECTIVE: To compare the predictive accuracy for 30-day mortality of the CURB65 score adopted by the British Thoracic Society and the simpler CRB65 score to APACHE (acute physiology and chronic health evaluation) II in patients with methicillin-resistant Staphylococcus aureus (MRSA) pneumonia. DESIGN: A retrospective, single-center, observational cohort study. SETTING: Barnes-Jewish Hospital, a 1,200-bed urban teaching hospital. PATIENTS: Adult patients requiring hospitalization identified to have MRSA pneumonia. INTERVENTIONS: Retrospective data collection from automated hospital, microbiology, and pharmacy databases. MEASUREMENTS AND MAIN RESULTS: Two hundred eighteen patients with MRSA pneumonia were identified over a 3-year period. Forty-four patients (20.2%) died during hospitalization. All three prediction rules had high negative predictive values but relatively low positive predictive values at most cut-off points examined. APACHE II had the greatest area under the receiver operating characteristic curve (0.805; 95% confidence interval [CI], 0.743 to 0.866) compared to CURB65 (0.634; 95% CI, 0.541 to 0.727) and CRB65 (0.643; 95% CI, 0.546 to 0.739) [p < 0.05 for both comparisons]. Similar results were obtained when the subgroups of community-acquired MRSA pneumonia and health-care-associated MRSA pneumonia were examined separately. CONCLUSIONS: APACHE II outperformed CURB65 and CRB65 for initial prognostic assessment in MRSA pneumonia.
OBJECTIVE: To compare the predictive accuracy for 30-day mortality of the CURB65 score adopted by the British Thoracic Society and the simpler CRB65 score to APACHE (acute physiology and chronic health evaluation) II in patients with methicillin-resistant Staphylococcus aureus (MRSA) pneumonia. DESIGN: A retrospective, single-center, observational cohort study. SETTING: Barnes-Jewish Hospital, a 1,200-bed urban teaching hospital. PATIENTS: Adult patients requiring hospitalization identified to have MRSA pneumonia. INTERVENTIONS: Retrospective data collection from automated hospital, microbiology, and pharmacy databases. MEASUREMENTS AND MAIN RESULTS: Two hundred eighteen patients with MRSA pneumonia were identified over a 3-year period. Forty-four patients (20.2%) died during hospitalization. All three prediction rules had high negative predictive values but relatively low positive predictive values at most cut-off points examined. APACHE II had the greatest area under the receiver operating characteristic curve (0.805; 95% confidence interval [CI], 0.743 to 0.866) compared to CURB65 (0.634; 95% CI, 0.541 to 0.727) and CRB65 (0.643; 95% CI, 0.546 to 0.739) [p < 0.05 for both comparisons]. Similar results were obtained when the subgroups of community-acquired MRSA pneumonia and health-care-associated MRSA pneumonia were examined separately. CONCLUSIONS: APACHE II outperformed CURB65 and CRB65 for initial prognostic assessment in MRSA pneumonia.
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