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Ethnic differences in preterm and very preterm delivery.

P H Shiono, M A Klebanoff

    American Journal of Public Health
    |November 1, 1986
    PubMed
    Summary
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    Blacks and Mexican-Americans face higher risks for preterm delivery compared to Whites. These ethnic disparities in preterm birth rates persist even after accounting for various risk factors.

    Area of Science:

    • Obstetrics and Gynecology
    • Perinatal Epidemiology
    • Health Disparities Research

    Background:

    • Preterm birth (delivery before 37 weeks) is a significant public health concern.
    • Existing data suggest ethnic variations in preterm birth rates, but the underlying causes require further investigation.

    Purpose of the Study:

    • To investigate ethnic differences in the rates of preterm and very preterm delivery.
    • To identify whether these differences persist after adjusting for known confounding factors.

    Main Methods:

    • Prospective cohort study involving 28,330 women.
    • Analysis of preterm delivery odds ratios across ethnic groups (Blacks, Mexican-Americans, Asians, Whites).
    • Statistical adjustments for maternal age, education, socioeconomic status, pregnancy behaviors, and prenatal care initiation.

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    Main Results:

    • Blacks exhibited the highest rates of preterm and very preterm delivery.
    • Adjusted odds ratios for preterm delivery were 1.79 for Blacks, 1.40 for Mexican-Americans, and 1.40 for Asians, relative to Whites.
    • Adjusted odds ratios for very preterm delivery were 2.35 for Blacks, 1.31 for Mexican-Americans, and 1.10 for Asians.

    Conclusions:

    • Significant ethnic disparities exist in preterm and very preterm delivery rates.
    • These differences are not fully explained by common obstetric complications or confounding demographic and behavioral factors.
    • Targeted interventions may be necessary to address ethnic disparities in preterm birth.