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Associations of maternal age- and parity-related factors with trends in low-birthweight rates: United States, 1980 through 2000

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  • Yang, Q.
  • Greenland, S.
  • Flanders, W.D.

Abstract

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 Hispanic 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.

Suggested Citation

  • Yang, Q. & Greenland, S. & Flanders, W.D., 2006. "Associations of maternal age- and parity-related factors with trends in low-birthweight rates: United States, 1980 through 2000," American Journal of Public Health, American Public Health Association, vol. 96(5), pages 856-861.
    • Handle: RePEc:aph:ajpbhl:10.2105/ajph.2004.049312_4
    DOI: 10.2105/AJPH.2004.049312
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    Cited by:

    1. Martina Štípková, 2013. "Declining health disadvantage of non-marital children," Demographic Research, Max Planck Institute for Demographic Research, Rostock, Germany, vol. 29(25), pages 663-706.
    2. Dowd, Jennifer Beam, 2007. "Early childhood origins of the income/health gradient: The role of maternal health behaviors," Social Science & Medicine, Elsevier, vol. 65(6), pages 1202-1213, September.
    3. Hideko Matsuo, 2006. "The Postponement of Motherhood and its Child Health Consequences: Birth Weight and Weight Gain during the First Year of Life," Vienna Yearbook of Population Research, Vienna Institute of Demography (VID) of the Austrian Academy of Sciences in Vienna, vol. 4(1), pages 91-114.

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