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To evaluate the performance of a simple screening tool for chest radiography for identification of community-acquired pneumonia (CAP) among emergency department (ED) patients who present with respiratory-related complaints. Our screening tool is a modification of a previously published guideline, which relied only on the presence of vital-sign abnormality (97% sensitivity, 19% specificity). We included respiratory symptoms to improve the specificity, defining our screening tool as the presence of any one respiratory symptom (cough, chest pain or shortness of breath) and any abnormality of the vital signs (temperature &gt;38 degrees C, heart rate &gt;100 beats/min, respiration rate &gt;20 breaths/min, or pulse oximetry &lt;95%).

A simple screening tool for identification of community-acquired pneumonia in an inner city emergency department