... models including traditional risk factors: maternalsmoking during pregnancy, maternal asthma and/ or rhinoconjuncti-vitis, paternal asthma and/ or rhinoconjunctivitis, current smoking in the household, ... missing values. Internal nonresponse/missing rates for all children were as follows: maternal smoking duringpregnancy (1.7%), current smoking in the household (1.2%), maternal asthma and/ or rhinoconjunctivitis ... model adjusting for age, sex, and country(crude),or maternal smoking during pregnancy, maternal asthma, and/ orrhinoconjunctivitis, paternal asthma and/ or rhinoconjunctivitis, oldersiblings, parental...