Study Of Association Between Residential Indoor Environment And Child Respiratory And Allergeic Diseases In The Severe Cold Area

Asthma, pneumonia, allergic rhinitis and other respiratory diseases seriouslyaffected physical and mental health of children. As a kind of environmental factor, theeffect of indoor environmental exposure factor on children health should not be ignored.In this paper, a cross-sectional questionnaire survey was used to survey the children inhaerbin randomly and collect the current status information on children‘s respiratoryand allergic diseases and indoor exposure factors, and the collected datas was replied toestablish the database for further study. The theory and method of epidemiology andstatistics was utilized to analyse the prevalence trends of the respiratory and allergicdiseases and the effect of indoor environmental exposure factor on these diseases.This paper give detailed analysis of prevalence trend of some diseases amongstudied diseases and the chi-squre test was used to analyse the signficance of prevalencedifferences of diseases in different circumstances. The statistical results showed that theprevalence of asthma was3.1%,pneumonia28.7%, the prevalence of wheezing, foodallergy, eczema and otitis was high, the prevalence of eczema and wheezing, etc,decreased with the increase of age. As the result of the chi-square test showed theprevalences of wheezing in male and female had significant difference(chi-square test, pvalue:0.000), the prevalence of eczema (chi-square test, p value:0.001) and asthma(chi-square test, p value:0.011) had significant difference in female and male.Theprevalence of neumonia (chi-square test, p value:0.003) and croup (chi-square test, pvalue:0.018) had significant difference in urban and suburban areas.In this paper, logistic regression was used to calculate the crude OR and adjustedOR to analyze the association between the indoor exposure factors and respiratory andallergic diseases among children. By univariate analysis, we got follow results: therewas a relatively strong correlation between the indoor dampness indicators and diseaseswe researhed, visible mould in house increased the risk of asthma (OR:2.583,95%confidence interval:1.391-4.797) and was a risk factor to allergic rhinitis((OR:3.819,95%confidence interval:1.944-7.488). The association between the families smokingand disease was not significant. After adjustments made for sex, age, the durition ofbreastfeeding, asthma and allergic diseases among family members, the analysis resultsshowed that visible mould in house was a risk factor of allergic rhinitis (adjusted OR:3.534,95%confidence interval:1.750-7.110), the correlation between smoking infamily member with asthma and pneumonia was not significant. For the most diseaseswe study, quilt affected with damp was a risk factor, while putting the quilt undersunshine played as a protective role. However,it could not be determined whether theabove association analysis results was affected by the bias in the case-control study.