Associations of Maternal Age- and Parity-Related Factors With Trends in Low-Birthweight Rates

United States, 1980 Through 2000

Bibliographic Data

ID11039779
AuthorsQuanhe Yang (0000-0002-1706-7987, Quanhe Yang is with the Division of Birth Defects and Developmental Disabilities, National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Ga. Sander Greenland is with the Departments of Epidemiology and Statistics, University of California, Los Angeles. W. Dana Flanders is with the Department of Epidemiology, School of Public Health, Emory University, Atlanta, Ga.), Sander Greenland (0000-0003-4364-3279, Quanhe Yang is with the Division of Birth Defects and Developmental Disabilities, National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Ga. Sander Greenland is with the Departments of Epidemiology and Statistics, University of California, Los Angeles. W. Dana Flanders is with the Department of Epidemiology, School of Public Health, Emory University, Atlanta, Ga.), W Dana Flanders (0000-0003-4069-3262, Quanhe Yang is with the Division of Birth Defects and Developmental Disabilities, National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Ga. Sander Greenland is with the Departments of Epidemiology and Statistics, University of California, Los Angeles. W. Dana Flanders is with the Department of Epidemiology, School of Public Health, Emory University, Atlanta, Ga.)
Year2006
Volume96
Issue5
Pages856-861
Publication date2006-05-01
Peer ReviewedYes
Open AccessNo
TypeARTICLE
VenueAmerican Journal of Public Health (JOURNAL)
Journal identifiersISSN: 0090-0036 • E-ISSN: 1541-0048
PublisherAmerican Public Health Association (PUBLISHER • US)
DOI10.2105/ajph.2004.049312
PMID16571716
PMCIDPMC1470574
OpenAlexW2107395982
LanguageEN
Citations received9
References cited28

Objectives. We assessed the effects of changes in the maternal age–parity distribution and age-and parity-specific low-birthweight rates on low-birthweight trends in the United States. Methods. We used natality file data from 1980 through 2000 to assess very-low-birthweight and low-birthweight rates among singleton live-born infants. Results. Changes in age-and parity-specific low-birthweight rates were the main contributor to the overall trend in rates. However, changes in the age–parity distribution, primarily delayed childbearing, had a smaller but noticeable impact. The very-low-birthweight rate increased 27% among Black women, and changes in the age–parity distribution were associated with, on average, more than 20% of the increased rate during the 1990s. Among His-panic and non-Hispanic White women, on average, more than 10% of the rate increase observed during the 1990s was associated with changes in the age–parity distribution. Conclusions. Assuming minimal changes in age-specific rates, delayed childbearing may play an increasingly important role in low-birthweight trends in the United States

Parity (physics) · Pregnancy · Singleton · Birth, Development, and Health · Breastfeeding Practices and Influences · Demography · Maternal and Perinatal Health Interventions · Medicine

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