Variables
Total (n=59,484)
Asthma
Asthma
Asthma
P-value
Yes (n=4,619) No
(n=54,865)
N % N % N %
Age (years [mean (SD)]) *
10.23 (3.92) 9.50 (3.82) 10.29 (3.92)
<0.001
<5 years
5647 (0.09) 480 (0.10) 5167 (0.09)
5-10 years
18171 (0.31) 1778 (0.38) 16393 (0.30)
10-15 years
28000 (0.47) 1954 (0.42) 26046 (0.47)
≥15 years
7666 (0.13) 407 (0.08) 7259 (0.13)
BMI (kg/m2 [mean (SD)]) *
18.57 (4.47) 18.71 (4.63) 18.56 (4.46)
0.037
Exercise time per week (hours [mean (SD)]) *
6.56 (7.96) 6.15 (7.64) 6.59 (8.00)
<0.001
Gender * <0.001
Boys
30,105 (50.61) 2,845 (61.59) 27,260 (49.69)
Girls
29,379 (49.39) 1,774 (38.41) 27,605 (50.31)
Asthma family history * <0.001
No family member affected
55641 (93.54) 3948 (85.47) 51693 (94.22)
1 family member affected
3529 (5.93) 585 (12.67) 2944 (5.37)
2 family members affected
279 (0.47) 73 (1.58) 206 (0.38)
≥ 3 family members affected
35 (0.06) 13 (0.28) 22 (0.04)