Fig. 1

Absolute change in performance on quality indicators for acute exacerbation of chronic obstructive pulmonary disease among eligible patients in the emergency departments. Asterisks indicate P < 0.05. CXR chest X-ray, Pul-ox pulse oximetry, ABG arterial blood gas, BD bronchodilators, SC-ed systemic corticosteroids in the emergency department, ABx antibiotics in the emergency department, SC-d systemic corticosteroids at discharge, Spiro spirometry