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Demographic characteristics according to current wheeze
Continuous data are presented as mean ± SD. Dichotomous data are presented as number (%). *Wheeze in the past 12 months; †Family history of asthma, allergic rhinitis, and atopic dermatitis; ‡Body mass index (kg/m2) ≥ 25; §Cumulative smoking dose is presented among current smokers and former smokers; ∥Duration of cessation of smoking is presented among former smokers.
