父母吸烟习惯和小儿呼吸道症状有关的证据正在积累,其机制尚未明嘹。Colley等提出这种联系可能是父母和小儿间对呼吸道疾病有相同的遗传易感性、同样的居住环境及家庭内有交叉感染的结果。Lebow-itz等发现当成人症状被控制时成人吸烟习惯与小儿呼吸道症状之间的关系就不再保持。Fergusson等提 Evidence of parental smoking habits and pediatric respiratory symptoms is accumulating, and the mechanism remains unclear. Colley and other proposed this relationship may be between parents and children have the same genetic susceptibility to respiratory diseases, the same living environment and cross-infection within the family results. Lebow-itz found that the relationship between adult smoking habits and pediatric respiratory symptoms is no longer maintained when adult symptoms are controlled. Fergusson et al