Subjects

Age(yr)

Height(m)

Weight(kg)

FEV1/FVC

Bronchial Challenge

FeNO(ppb)

Asthmatics

26.1 ± 4.4

1.81 ± 0.06

75 ± 6.7

0.78 ± 0.09*

-21.7 ± 3.7% PD in FEV1*

28.1 ± 9.7*

Non-asthmatics

23 ± 2.4

1.81± 0.04

75.5 ± 5.9

0.84 ± 0.05

-5.9 ± 3.4% PD in FEV1

14.8 ± 3.4

Table 1: FEV1/FVC, forced expired volume 1 s / Forced Vital Capacity; Bronchial Challenge to metacholine, PD > 20% in FEV1 was considered a positive test; FeNO(ppb), fractional exhaled nitric oxide. *Significant (p<0.05) difference between asthmatics and controls. Mean SD.