AJPH First Look, published online ahead of print Mar 29, 2006
Associations of Maternal Age- and Parity-Related Factors With Trends in Low-Birthweight Rates: United States, 1980 Through 2000
Quanhe Yang, PhD,
Sander Greenland, DrPH and
W. Dana Flanders, MD, ScD
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.


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FIGURE 1 Trends in very-low-birthweight (VLBW) rates and percentage distributions associated with changes in the ageparity distribution and changes in age- and parity-specific rates among Whites and Hispanics (a) and Blacks (b): United States, 19802000.
Note. For 1990 through 2000, the odd-year percentage distribution bars associated with changes in the ageparity distribution and changes in age- and parity-specific rates refer to Hispanics, and the even-year bars refer to non-Hispanic Whites.
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FIGURE 2 Trends in low-birthweight rates (LBW) and percentage distributions associated with changes in the ageparity distribution and changes in age- and parity-specific rates among Whites and Hispanics (a) and Blacks (b): United States, 19802000.
Note. For 1990 through 2000, the odd-year percentage distribution bars associated with changes in the ageparity distribution and changes in age- and parity-specific rates refer to Hispanics, and the even-year bars refer to non-Hispanic Whites.
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Copyright © 2006 by the American Public Health Association