Evaluating the Impact of Maternal Exposure to Ozone on Twin Fetal Growth in China.

Unlike singletons, twins require attention not only to the birth weight of the fetuses but also to discordance (i.e., the differences between weights) because twin growth discordance is a significant factor contributing to perinatal mortality and morbidity in twin pregnancies.

Association of developmental coordination disorder with early-life exposure to fine particulate matter in Chinese preschoolers.

Although fine particulate matter (PM) is a neurotoxicant, little is known about whether early-life PM exposure is associated with an increased risk of developmental coordination disorder (DCD). We conducted a cohort study of 109 731 children aged 3-5 years from 551 county-level cities in China between April 2018 and December 2019. Residential PM exposure was estimated using a hybrid satellite-based exposure model.

Early-Life Exposure to PM and Sleep Disturbances in Preschoolers from 551 Cities of China.

Air pollution has been linked with sleep disturbance in adults, but the association in children remains unclear. To examine the associations of prenatal and postnatal exposure to fine particulate matter (particulate matter ⩽2.5 μm in aerodynamic diameter; PM) with sleep quality and sleep disturbances among children in 551 Chinese cities.