Jithoo A, Enright P, Vollmer WM, et al. Implications of screening for COPD: results from the Burden of Obstructive Lung Disease (BOLD) study from 14 countries. Thorax 2009;64(Suppl IV):A32. In this abstract, “prebronchial” should have been written as “pre-bronchodilator”. The footnote should have read: *Post bronchodilator FEV₁/FVC<LLN and FEV₁ <80% predicted. Additionally, FEV₁ should have been expanded as “forced expiratory volume in 1 second”.