Background: An evidence gap exists concerning the timing of delivery at 37-42 weeks and the risk of attention-deficit hyperactivity disorder (ADHD) in offspring.
Objective: To determine the association between timing of delivery in low-risk pregnancies at term (37-42 weeks) gestations and ADHD in offspring.
Methods: This population-based cohort study comprised 1,424,453 singletons in Sweden and 403,765 in British Columbia (BC), Canada, live-born at 37-42 completed weeks to low-risk pregnant women between 2000 and 2018.
Background: Obesity is a risk factor for stillbirth and perinatal death and is often accompanied by chronic hypertension. However, there are few studies on the relationship between prepregnancy body mass index and gestational age-specific risks of stillbirth and perinatal death in women with chronic hypertension.
Objective: This study aimed to examine the relationship between prepregnancy body mass index and gestational age-specific risks of stillbirth and perinatal death in the presence/absence of chronic hypertension.
Background: Administration of chemotherapy during pregnancy is often delayed, while preterm delivery is common. If in utero exposure to chemotherapy is associated with adverse pediatric outcomes, it is unknown whether that relationship is directly attributable to the chemotherapy or is mediated by preterm birth.
Methods: Cases were identified from Canadian cancer registries and administrative data in Alberta, British Columbia, and Ontario, 2003-2017, with follow-up until 2018.