Changes of correlation between residential environment factors andchildren’s allergic diseases in past decade in Chongqing

Based on the repeated cross-sectional surveys’ data of residential environments and children’s health outcomes in Chongqing in 2010 and 2019, this study adopts the binary logistic regression to analyse the changes of the correlation between residential environment factors and children’s allergic diseases before and after 10 years. The results show that many factors that are significantly associated with allergic diseases in children are not significant after 10 years compared to 10 years ago, such as residential location, residential building type, residential floor area, redecoration during pregnancy, and installation of mechanical ventilation in toilets. Some of the factors that don’t have a significant effect on allergic diseases in children significantly increase the risk of allergic diseases in children after 10 years, such as the purchase of new furniture in the interior, an industrial area surrounding the residence, and the use of latex paint (compared with lime and cement) in the wall materials of children’s bedrooms. After 10 years, the residence proximity to a commercial area no longer significantly increases the risk of allergic rhinitis in childhood and present rhinitis symptoms, but it significantly increases the risk of eczema in childhood, and reducing the frequency of ventilation in children’s bedrooms at night reduces the risk of allergic diseases in children. This study results can provide some guidance and reference for understanding the relationship between the change of residential environment and the influence of children’s allergic diseases and improving children’s residential environment.