TY - JOUR T1 - Associations between household air pollution and early child development among children aged 36–59 months in Bangladesh JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 667 LP - 676 DO - 10.1136/jech-2021-217554 VL - 76 IS - 7 AU - Juwel Rana AU - Patricia Luna-Gutiérrez AU - Syed Emdadul Haque AU - José Ignacio Nazif-Muñoz AU - Dipak Kumar Mitra AU - Youssef Oulhote Y1 - 2022/07/01 UR - http://jech.bmj.com/content/76/7/667.abstract N2 - Background Household air pollution (HAP) from solid fuel use (SFU) for cooking may impact child health in low-resources countries. This study examined the associations between HAP and early childhood development (ECD) outcomes among children under 5 years of age in Bangladesh and explored potential effect modification by sex and urbanicity.Methods The study sample consisted of 9395 children aged 36–59 months in the households from the Bangladesh Multiple Indicator Cluster Survey 2019. SFU and levels of exposure to SFU (unexposed, moderately exposed and highly exposed) were used as proxies of HAP exposure. We estimated the covariate-adjusted prevalence ratios (aPRs) and 95% CIs for the associations between HAP and ECD outcomes using multilevel mixed-effects Poisson regression models with a robust variance estimator.Results 81.4% of children were exposed to SFU, and the prevalence of developmental delay (in Early Childhood Development Index) was 25.3%. Children exposed to SFU were 1.47 times more likely to have developmental delays (95% CI: 1.25, 1.73; p<0.001) compared with children with no SFU exposure. SFU was significantly associated with developmental delay in socioemotional (aPR: 1.17; 95% CI: 1.01, 1.36; p=0.035) and learning-cognitive (aPR: 1.90; 95% CI: 1.39, 2.60; p<0.001) domains. Similarly, children moderately exposed and highly exposed to HAP had higher prevalence of developmental delays than unexposed children. We did not observe effect modification by sex or urbanicity.Conclusion Public health policies should promote the use of clean cooking fuels and cookstoves to reduce the high burden of HAP exposure in low-resource countries for helping younger children to meet their developmental milestones.Data are available upon reasonable request. All data files are publicly available and can be downloaded upon request from the MICS program database: https://mics.unicef.org/surveys. Codes are also available from the corresponding author on reasonable request. ER -