Document Detail


Trends in fetal growth among singleton gestations in the United States and Canada, 1985 through 1998.
MedLine Citation:
PMID:  12211616     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We examined trends in fetal growth among singleton live births in the United States and Canada. The data files (n = 48,637,680; 16.6% blacks) for US births, and the Canadian Birth Database of Statistics Canada (n = 3,167,702) for Canadian births were used. Trends were assessed between 1985-86 and 1997-98 with reference to mean birthweight, birthweight-for-gestational-age z-score, and proportions delivered low birthweight (< 2,500 g), small for gestational age (SGA: birthweight < 10th centile for gestational age) and large for gestational age (LGA: birthweight > 90th centile). The term "mean birth weight" increased in the US and Canada between 1985 and 1998, as have the mean z-score. Rates of term SGA births declined among US (11% among whites and 12% among blacks) and Canadian births (27%). Preterm SGA births increased by 3% and 17%, respectively, among US whites and blacks, but declined by 11% among Canadian births. Further, term LGA births increased in the US (5% among whites and 9% among blacks) and Canada (24%). Preterm LGA births declined by 13%, 25%, and 14% among US whites and blacks, and Canadian births, respectively. These findings suggest that US and Canadian babies are getting bigger. The role of preterm obstetrical induction and preterm cesarean delivery are likely to have influenced these trends.
Authors:
Cande V Ananth; Shi Wu Wen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Seminars in perinatology     Volume:  26     ISSN:  0146-0005     ISO Abbreviation:  Semin. Perinatol.     Publication Date:  2002 Aug 
Date Detail:
Created Date:  2002-09-04     Completed Date:  2003-02-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7801132     Medline TA:  Semin Perinatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  260-7     Citation Subset:  IM    
Affiliation:
Department of Obstetrics, Gynecology and Reproductive Sciences, UMDNJ-Robert Wood Johnson Medical School, New Brunswick 08901, USA. ananthcv@EPI.UMDNJ.EDU
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MeSH Terms
Descriptor/Qualifier:
African Continental Ancestry Group
Birth Weight*
Canada / epidemiology,  ethnology
Cohort Studies
Embryonic and Fetal Development*
European Continental Ancestry Group
Female
Fetal Macrosomia
Humans
Infant, Low Birth Weight
Infant, Newborn
Infant, Small for Gestational Age
Pregnancy
Public Health
United States / epidemiology,  ethnology

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