Current asthma†, n = 127 Current asthma†, n = 127 No current asthma, n = 465 No current asthma, n = 465
mean (SD) n (%) mean (SD) n (%)
Age (y) 12. 3 (1.5) 127 (100)  12.6 (1.4)  465 (100)
Sex
Male
73 (57.5)
249 (53.5)
Female
54 (42.5)
216 (46.5)
Parental education
< 9 y completed
0
0 (0)
9–12 y completed
34 (26.8)
105 (22.6)
>12 y completed
93 (73.2)
360 (77.4)
Any parental asthma
Yes
58 (45.7)
72 (15.5)
No
66 (52.0)
374 (80.4)
Missing
3 (2.4)
19 (4.1)
Smoking mother, current
Yes
10 (7.9)
54 (11.6)
No
70 (55.1)
220 (47.3)
Missing
47 (37.0)
191 (41.1)
Smoking father, current
Yes
13 (2.4)
35 (7.5)
No
68 (53.5)
252 (54.2)
Missing
46 (36.2)
178 (38.3)
FENO:
≥18.25 ppb.‡ 55 (43.3)  92 (19.8)
Arithmetic mean
25.5 (22.1)
122 (96.1)
15.8 (13.0)
436 (93.8)
Geometric mean
18.0
122 (96.1)
12.9
436 (93.8)
Allergen-specific IgE level, kUA/L
Arithmetic mean
19.6 (26.3)
115 (90.6)
7.0 (17.9)
433 (93.1)
Geometric mean
2.3
115 (90.6)
0.3
433 (93.1)
IgE positive: §
No
40 (31.5)
283 (60.9)
Yes
75 (59.1)
150 (32.3)
Eosinophil cell count, 1*109 counts/L
Arithmetic mean 0.4 (0.4) 115 (90.6)  0.3 (0.3)  422 (90.8)
Geometric mean 0.3 115 (90.6) 0.2 421 (90.5)
ICS regularly#
No
83 (65.4)
464 (99.8)
Yes
44 (34.6)
1 (0.2)
Zygosity:
MZ
72 (56.7)
205 (44.1)
DZ
55 (43.3)
260 (55.9)