Assessment of the role of fractional exhaled nitric oxide as a predictor of airway eosinophilia and corticosteroid responsiveness in patients with chronic cough

The Egyptian Journal of Bronchology

Table 3 FeNO before and after treatment in the studied patients with steroid responsive and non-responsive cough

	FeNO level (ppb) before treatment	FeNO level (ppb) after treatment	p
Steroid responsive cough	48.33 ± 11.57	20.16 ± 12.45	0.018
Steroid non-responsive cough	20.16 ± 12.45	19.8 ± 12.36	0.13