Table 2.
Correlations between fraction of exhaled nitric oxide and clinical parameters.
| ρ | p-value | |
|---|---|---|
| Age | 0.370 | 0.017 |
| Duration of asthma, years | −0.137 | 0.391 |
| BMI | 0.014 | 0.929 |
| Blood %eosinophil | 0.140 | 0.396 |
| Blood total IgE | 0.022 | 0.895 |
| FEV1, % predicted | −0.033 | 0.728 |
| FEV1/FVC ratio, % | −0.237 | 0.136 |
| MMF, % predicted | −0.156 | 0.330 |
| Inhaled corticosteroid dose, μg | 0.090 | 0.586 |
Data are expressed as the Spearman rank correlation coefficient (ρ) and p-value. BMI, body mass index; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; MMF, maximum mid-expiratory flow rate.