title: Who should be studied and when in a longitudinal birth cohort?
abstract: A longitudinal birth cohort study is uniquely able to collect information on exposures that antecede signs and symptoms leading to diagnoses, and on the development of neurocognitive and behaviour traits. Here we discuss the optimal time to start such a study, and criteria for inclusion and exclusion of subjects.
authors.affiliation: Centre for Child and Adolescent Health, Department of Community Based Medicine, University of Bristol, Bristol, UK. jean.golding@bristol.ac.uk
authors.forename: Jean
authors.initials: J
authors.lastname: Golding
mesh_terms: D002653:Child Behavior Disorders / Q000453:epidemiology* / Q000517:prevention & control; D002657:Child Development / Q000502:physiology; D003072:Cognition Disorders / Q000453:epidemiology* / Q000517:prevention & control; D015331:Cohort Studies; D004812:Epidemiologic Methods; D005260:Female; D006130:Growth Disorders / Q000453:epidemiology* / Q000517:prevention & control; D006801:Humans; D007227:Infant Nutritional Physiological Phenomena / Q000502:physiology; D007231:Infant, Newborn; D008297:Male; D039382:Maternal Nutritional Physiological Phenomena / Q000502:physiology; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects / Q000453:epidemiology* / Q000517:prevention & control; D013997:Time Factors; D014028:Tobacco Smoke Pollution / Q000517:prevention & control*
chemical_list: D014028:Tobacco Smoke Pollution