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. 2014 Aug 14;24:14033. doi: 10.1038/npjpcrm.2014.33

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Copyright © 2014 Primary Care Respiratory Society UK/Macmillan Publishers Limited

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Receiver operating characteristic (ROC) curve and its coordinates for the forced expiratory volume in 1 s /forced expiratory volume in 6 s (FEV₁/FEV₆) ratio using post-BD FEV₁/FVC<0.7 as criterion for chronic airflow obstruction (AUC: 0.937).