Sex differences in weight in infancy and the British 1990 national growth standards.
Objectives-To determine if there is a sex difference in infancy in the new British national standards for weight (based on data from 1990).
Design-Weight data in a birth cohort were compared with the 1990 standards and Tanner and Whitehouse (1966) standards up to age 12 months.
Setting-Newcastle upon Tyne
Subjects-3418 term infants.
Our cohort showed a mean difference in standard deviation scores of 0.42 between boys and girls (P<0.0001) when compared with the 1990 standards.
Two and a half times as many girls as boys had weights below the 3rd centile during the first year, with an equivalent excess of boys above the 97th centile (P<0.0001).
Similar results were found with Tanner and Whitehouse standards.
Conclusions-These differences could result in substantial sex bias in the identification of poor growth in early childhood.
The standards need modification.
Mots-clés Pascal : Poids corporel, Norme, Royaume Uni, Europe, Angleterre, Grande Bretagne, Epidémiologie, Nourrisson, Homme, Nouveau né, Sexe, Etude comparative
Mots-clés Pascal anglais : Body weight, Standards, United Kingdom, Europe, England, Great Britain, Epidemiology, Infant, Human, Newborn, Sex, Comparative study
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0423233
Code Inist : 002B20G01. Création : 10/04/1997.