Table 2

Comparison of the sensitivity, specificity, and likelihood ratio of a positive test for the prediction of airways inflammation with the corresponding cut off values for eNO (measured by tidal breathing (TB) or restricted breath analysis (RB)) and blood eosinophil count

AUC (SE)Cut off valueSensitivity (%)Specificity (%)Positive likelihood ratio
AUC = area under curve; eNO = exhaled nitric oxide; TB = tidal breathing; RB = restricted breath.
eNO (TB)0.80 (0.07)8.9 ppb76834.5
eNO (RB)0.87 (0.05)16.9 ppb81804.1
Blood eosinophils0.74 (0.1)5.6%69875.3