Prospective cohort study to reduce the incidence of infant asthma

18个月大时健康体检的累积发病率为医生诊断的哮喘5.4%，特应性湿疹6.3%，食物过敏13.7%，花粉热1.1%。在42个月龄的健康体检中，医生诊断的哮喘、特应性湿疹、食物过敏和花粉热的累积发病率分别为10.1%、11.2%、12.3%和3.2%。孕期吸烟与18个月大时体检中医生诊断为哮喘的累积发病率呈正相关。与既是母亲又是家庭的非吸烟者相比，母亲和家庭都是吸烟者患哮喘的优势比更高。

The cumulative incidence in the health check-up at 18 months of age was 5.4% for physician-diagnosed asthma, 6.3% for atopic eczema, 13.7% for food allergy, and 1.1% for hay fever. The cumulative incidence in the health check-up at 42 months of age was 10.1% for physician-diagnosed asthma, 11.2% for atopic eczema, 12.3% for food allergy, and 3.2% for hay fever. Maternal smoking during pregnancy is positively associated with the cumulative incidence of physician-diagnosed asthma in the health check-up at 18 months of age. Compared with nonsmokers who were both mother and household, odds ratio for asthma was higher in smokers who were both mother and household.