Association between maternal alcohol consumption during pregnancy and risk of preterm delivery: the Japan Environment and Children's Study

To examine the association between maternal alcohol consumption during pregnancy and the risk of preterm delivery.Prospective cohort study.The Japan Environment and Children's Study (JECS).A total of 94 349 singleton pregnancies.Participants completed questionnaires detailing alcohol consumption during the first trimester and during the second and third trimesters. Participants were divided into four categories according to alcohol consumption...