Table 1.

Participating birth cohort studies

Study	Country	Number, Start Date and Anticipated Length	Research Foci
Born in Bradford (BIB)	England	10,000 children Recruitment began in 2007 20 years	infant mortality, congenital anomalies and childhood disability, low birth weight, postnatal growth, childhood obesity and insulin resistance, environmental health risks (diet, water and air), renal disease, poverty, ethnicity and health, mental health
Canadian Healthy Infant Longitudinal Development Study (CHILD)	Canada	5,000 families Recruitment began in 2008 At least six years, likely longer	investigate the roles of indoor and outdoor environmental exposures, infections, nutrition, genetics and psychosocial factors in the development of allergic diseases, including food allergies, eczema, allergic rhinitis and asthma
Copenhagen Prospective Study on Asthma in Childhood (COPSAC)	Denmark	411 children Recruitment began in 1998	Clinical outcomes comprise pre-asthma, asthma, non topic dermatitis, allergic rhinitis, allergy, lung function and bronchial responsiveness
Generation R	Netherlands	9778 mothers and their children Recruitment began in 2001 Until adulthood	Growth, development and health from early fetal life onwards to adulthood; physical and mental outcomes, environmental and genetic outcomes
Etude Longitudinale Française depuis l'Enfance (ELFE)	France	20,000 Recruitment to begin in 2010 (pilot study completed) At least 20 years	Childhood development and impact of various factors (e.g. family structure, social and physical environment, education, nutrition) on physical, psychological and social outcomes to adulthood
National Children's Study	United States	100,000 children Recruitment began in 2009 Will follow from birth to age 21	Influence of environmental and genetic interactions on child health and development