To assess the reasons for the Chinese-Caucasian differences in birth weight distributions, a cohort study was carried out involving 18,665 Caucasian and 1,597 immigrant Chinese infants born at Montreal's Royal Victoria Hospital from January 1978 to March 1990 and 1,862 native Chinese infants born at Hefei Maternal and Infant Hospital in Hefei, People's Republic of China, from September 1990 to August 1991.
The race-specific rate of growth differed according to period of gestation, with Chinese infants showing more rapid fetal growth early in the third trimester but slower growth near and after term.
The authors conclude that the lower mean birth weight in Chinese infants is due to differences in fetal growth (rather than gestational duration) and by their inherently slower growth at or after term.
The tight distribution of birth weight among the Chinese is caused partly by their reduced exposure to extremes of maternal determinants of fetal growth (mediated largely by environmental mechanisms) and partly by their inherently different growth pattern, with faster growth at earlier gestations but slower growth at later gestations.
An J Epidemiol 1995 ; 141 : 1177-87.
Mots-clés Pascal : Poids naissance, Hypotrophie foetale, Age gestation, Race, Epidémiologie, Nouveau né, Homme, Caucasoïde, Mongoloïde, Chine, Asie, Etats Unis, Amérique du Nord, Amérique, Etude comparative, Gestation pathologie, Foetus pathologie
Mots-clés Pascal anglais : Birth weight, Fetal hypotrophy, Gestational age, Race, Epidemiology, Newborn, Human, Caucasoid, Mongoloid, China, Asia, United States, North America, America, Comparative study, Pregnancy disorders, Fetal diseases
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0379015
Code Inist : 002B20G03. Création : 01/03/1996.