Height, Age, and Atopy Are Associated With Fraction of Exhaled Nitric Oxide in a Large Adult General Population Sample

The fraction of exhaled nitric oxide (Feno) is elevated in subjects with asthma and atopy, and it has been proposed to be a noninvasive marker of airway inflammation. In addition to asthma and atopy, there is limited information about the determinants of Fenoin a general population.