Table 1.

Clinical characteristics of the participants

Variable	Asthma patients	Control subjects	p
	n = 309	n = 163
Age (mean ± SD)	10.7 ± 2.1	11.2 ± 2.6	0.409
Gender (M/F)	187/122	94/69	0.549
sIgE (IU/ml)	302.8 ± 87.5	61.3 ± 38.2	0.000
Household smoking	91	30	0.009
Recurrent respiratory infection	106	22	0.000
Atopy	216	0	–
Severity	45	0	–
Rhinitis	147	0	–
Medication	254	0	–
FEV1/FVC (%)	78.2 ± 6.4	–	–