Table 3.

Risk factors for bronchial hyper‐responsiveness during teenage in 80 children hospitalized for wheezing in infancy

Risk factors for BHR* (present/tested)	BHR	OR (95% CI)†
	To exercise‡
Specific IgE§ to inhalant allergens	10	12.586
(n = 13/71)		(2.303–68.772)
Maternal smoking during pregnancy	8	4.584
(n = 17/78)		(1.282–16.391)
	To methacholine¶
Atopic dermatitis in infancy	13	3.484
(n = 19/69)		(1.094–11.101)

*Only statistically significant risk factors reported.

^†ORs and 95% CIs between the groups determined by logistic regression adjusted for sex and age (<12 months/≥12 months) on admission.

^‡Fall in FEV₁≥ 10%.

^§≥0.35 kU/L.

^¶PD₂₀ < 1600 μg methacholine.