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ROC curve for FeNO levels and blood eosinophil counts for differentiating ACO from COPD.
Notes: (A) ROC curve for FeNO levels, (B) ROC curve for blood eosinophil counts.
Abbreviations: ACO, asthma–COPD overlap; AUC, area under the curve; FeNO, fractional exhaled nitric oxide; ICS, inhaled corticosteroids; ICS treatment (−), patients naïve to ICS; ICS treatment (+), patients treated with ICS; ROC, receiver operating characteristic.
