Tongji Maternal and Child Health Cohort

This is an ongoing population-based prospective cohort study to obtain data for the evaluation of current used recommendations for weight gain during pregnancy released by IOM (2007) and investigate the association between maternal diet and the health outcomes of mother and offspring. 8649 pregnant have been recuited from the first trimester of pregnancy. All datas including the general information, sociodemographic facts, physical exam (body weight, height, blood pressure, etc), laboratory test (hemoglobin, glucose concentration, etc.) and dietary survey (FFQ, 24h food recall) have been collected during the cohort study. Blood sample leftover from the clinical use are remained and stored at -80℃for further measurements. Obstetric characteristics, maternal and perinatal outcomes have been observed and recorded. Growth and development paremeters such as weight, length and head circumference as well as disease information of infants have been collected , feeding pattern and feeding history will be surveyed. All data collected will be used for group analysis only and all private and individual records will be kept secret.