FENO (ppb) in females and males in relation to age

	Females		Males
Age	median	95th perc	median	95th perc.	p-value*
25-34	10.8	22	16.7	34.2	<0.0001
35-44	13.3	28.4	17.3	33.4	<0.0001
45-54	15.0	29.1	18.0	37.2	<0.0001
55-64	17.9	37.9	19.7	39.1	0.03
65-74	18.1	37.4	20.6	50.0	0.07
>74	20.2	28.5	19.7	63.3	0.6

*p-value= difference between males and females