Rapid development and westernisation in Kuwait and other Gulf states have been accompanied by rising rates of obesity, diabetes, asthma, and other chronic conditions. Prenatal experiences and exposures may be important targets for intervention. We undertook a prospective pregnancy-birth cohort study in Kuwait, the TRansgenerational Assessment of Children's Environmental Risk (TRACER) Study, to examine prenatal risk factors for early childhood obesity. This article describes the methodology and results of follow-up through birth.Women were recruited at antenatal clinical visits. Interviewers administered questionnaires during the pregnancy and collected and banked biological samples. Children are being followed up with quarterly maternal interviews, annual anthropometric measurements, and periodic collection of biosamples. Frequencies of birth outcomes (i.e. stillbirth, preterm birth, small and large for gestational age, and macrosomia) were calculated as a function of maternal characteristics and behaviours.Two thousand four hundred seventy-eight women were enrolled, and 2254 women were followed to delivery. Overall, frequencies of stillbirth (0.6

作者：Mohammad, AlSeaidan；Rihab, Al Wotayan；Costas A, Christophi；Massouma, Al-Makhseed；Yara, Abu Awad；Feiby, Nassan；Ayah, Ahmed；Smitha, Abraham；Robert Bruce, Boley；Tamarra, James-Todd；Rosalind J, Wright；Douglas W, Dockery；Kazem, Behbehani

来源：Paediatric and perinatal epidemiology 2016 年 30卷 4期