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 value | Sensitivity (%) | 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 ppb | 76 | 83 | 4.5 |
| eNO (RB) | 0.87 (0.05) | 16.9 ppb | 81 | 80 | 4.1 |
| Blood eosinophils | 0.74 (0.1) | 5.6% | 69 | 87 | 5.3 |