Lifetime-ever pneumonia among pre-school children across China - Associations with pre-natal and post-natal early life environmental factors

摘要: Abstract Background Biomass burning is associated with childhood pneumonia but few studies exist on other indoor factors. Aim To study in relation to pre-natal and post-natal exposure among children across China. Methods Children (3–6 y) (n = 39,782) from randomized day care centres seven cities Information home environment factors were assessed by a parental questionnaire. Life-time outdoor temperature GDP per capita city level. Associations calculated multilevel logistic regression adjusting for fourteen co-variates. Results Totally 32.0% had ever diagnosed physician. of farmer mothers (OR 0.65), breastfeeding 0.91) living rural 0.85) or suburban 0.90) areas less pneumonia. Buying new furniture one year before conception 1.11) after first life 1.10) increased the risk. Redecoration 1.20), during pregnancy 1.18) 1.17) mould 1.17), window pane condensation (WPC) 1.20) odour 1.15) at birth only higher risk Similar associations seen dampness current home. oldest newest homes Cockroaches 1.08), mosquitos flies 1.18), an exhaust fan bathroom economic development level, measured as level 1.11 10,000 RMB/year) Conclusions Perinatal postnatal mould, can be early Moreover, chemical emissions renovation could increase Breastfeeding, farm exposure, protective.