| Sensitivity % | Specificity % | PPV % | NPV % | AUC% (95% CI) |
---|---|---|---|---|---|
FeNO > 20 ppb | 47.8 | 81.5 | 69.1 | 64.4 | 68 (64–69) |
FeNO > 25 ppb | 52.2 | 71.7 | 61.4 | 63.4 | 67 (64–70) |
FeNO > 35 ppb | 47.1 | 74.7 | 61.7 | 62.0 | 66 (63–69) |
By asthma status (FeNO > 20 ppb) | |||||
   Non-asthmatics | 37.7 | 84.8 | 66.1 | 62.9 | 65 (61–69) |
   Asthmatics | 87.5 | 52.0 | 82.4 | 61.9 | 82 (71–91) |