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Table 2 Asthma severity and FeNO

From: The value of FeNO measurement in childhood asthma: uncertainties and perspectives

Author

Age range(years)

Subjects (number)

Correlation

Direction of effect

Gagliardo R, PediatrAllergyImmunol 2009

6-14

35 with asthma

. eosinophilia in induced sputum

Yes

. IL-8 in induced sputum

. allergen skin prick tests

. number of severe exacerbations

Van der Valk RJ, Allergy 2012

10.9 (mean age)

72 with asthma

. moderate exacerbations

Yes

Franklin PJ, Thorax 2003

11.5 (mean age)

155 enrolled from an unselected population

. atopy (p < 0.001)

Yes

   

. level of AR (p = 0.005)

 
   

. blood eosinophil count (p = 0.007)

 
   

. bronchial hyperresponsiveness (p = 0.02)

 
  1. AR airway reactivity.