In our analysis, the median FeNO reduction after treatment was −26.7% in responders compared with −18.7% in nonresponders and did not reach statistical significance, unlike Leung et al 35 After distinguishing treatment responders from nonresponders, subanalysis did not show significantly reduced FeNO levels in treatment responders.
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Noninvasive Disease Assessment in Eosinophilic Esophagitis With Fractionated Exhaled Nitric Oxide, Blood, and Fecal Biomarkers.
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