Sex differences in weight in infancy

Abstract
# Published centile charts for weight have been updated {#article-title-2} EDITOR,—Charlotte M Wright and colleagues report a discrepancy between the sexes in weight in infancy1 when the British 1990 growth reference2 was used to standardise the weights of infants in Newcastle upon Tyne. They suggest that this arises from a bias in the growth reference rather than a regional difference in growth. We looked for a possible regional effect in a cohort of 7400 babies from West Sussex, who were measured between birth and 35 weeks (courtesy of Dr Ann Wallace). As in Newcastle, …