Table 4: FeNO levels according to age and their respective benchmarks.

FeNO Basal 2 Visit 3 Visit
< 12 years
Low 12.43 ± 4.65 10.29 ± 3.35 12.09 ± 4.57
Intermediate 23.00 ± 3.94 25.60 ± 3.78 21.00 ± 0.0
High 58.00 ± 2.83 64.00 ± 14.14 54.00 ± 11.31
≥ 12 years
Low 13.50 ± 6.36 17.60 ± 7.64 19.40 ± 4.16
Intermediate 30.33 ± 8.51 31.00 ± 12.73 32.00 ± 0.0
High 80.67 ± 2.52 84.00 ± 0.0 57.00 ± 1.41

Show the mean ± SD of the absolute values according to the age and levels of severity of FeNO.