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Maternal and Child Health Journal

, Volume 22, Issue 6, pp 893–902 | Cite as

Maternal Obesity and Risk of Preterm Birth and Low Birthweight in Hawaii PRAMS, 2000–2011

  • Alana C. Ju
  • Melvin B. Heyman
  • Andrea K. Garber
  • Janet M. Wojcicki
Article
  • 410 Downloads

Abstract

Objective Maternal obesity is a risk factor for preterm birth, a leading cause of infant morbidity and mortality. Native Hawaiian and other Pacific Islanders (NHOPI) have high rates of poor birth outcomes. Despite the high rates of obesity in NHOPI in Hawaii, the association with preterm birth has not been examined in this population. Methods We performed a retrospective cohort study of 20,061 women using data collected by Hawaii’s Pregnancy Risk Assessment Monitoring System (PRAMS) from 2000 to 2011. We investigated the contribution of maternal age, pre-pregnancy BMI, gestational diabetes, hypertension, race, socioeconomic status, and smoking to our primary outcomes of preterm birth and low birthweight using multivariable logistic regression, stratified by NHOPI versus non-NHOPI race. Results Pre-pregnancy obesity was more common in NHOPI than non-NHOPI women (23.9 and 10.5%, respectively; p < 0.01). Overall, the risk for preterm birth increased with maternal obesity (BMI ≥ 30.0; aOR = 1.24, 95% CI 1.06–1.45, p < 0.01), compared with normal weight women. Among NHOPI women, the prevalence of preterm birth was elevated compared with non-NHOPI women although the prevalence of low birth weight was lower. After adjusting for confounders, risk for preterm birth and low birth weight were elevated in NHOPI women compared with White women. Maternal obesity did not significantly affect the risk of prematurity within the NHOPI group. Conclusions for Practice Our study demonstrates an association between maternal pre-pregnancy obesity and preterm deliveries in Hawaii. NHOPI have high rates of pre-pregnancy obesity as well as increased risk of both preterm delivery and low birthweight when compared to White women. Further data are needed to assess interactions between race, maternal health, and neonatal morbidity, and to identify ways to improve birth outcomes for minority populations in the state of Hawaii.

Keywords

Obesity Hawaii Native Hawaiian Prematurity Preterm birth Low birthweight PRAMS 

Abbreviations

PRAMS

Pregnancy Risk Assessment Monitoring System

NHOPI

Native Hawaiian and Other Pacific Islander

LBW

Low birthweight

Notes

Author Contributors

Dr. Ju conceptualized and designed the study, carried out the data analysis, drafted the initial manuscript, and approved the final manuscript as submitted. Dr. Wojcicki advised on study design and data analysis, reviewed and revised the manuscript, and approved the final manuscript as submitted. Drs. Heyman and Garber critically reviewed the manuscript and approved the final manuscript as submitted.

Funding

Alana Ju is supported by the UCSF Pathway to Discovery Program in Clinical and Translational Research. Dr. Garber’s time was supported in part by the Maternal and Child Health Bureau, Leadership and Education in Adolescent Health Training Grant, Project #5T71MC0000. Dr. Wojcicki is supported by an NIH NIDDK 080825 award. The project was supported by the Centers for Disease Control and Prevention (CDC) and Hawaii PRAMS. The funding was provided by UCSF Pathway to Discovery Program in Clinical Research, Maternal and Child Health Bureau (Grant No. 5T71MC0000).

Compliance with Ethical Standards

Conflict of interest

The authors have no conflicts of interest relevant to this article to disclose.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Alana C. Ju
    • 1
  • Melvin B. Heyman
    • 1
  • Andrea K. Garber
    • 1
    • 2
  • Janet M. Wojcicki
    • 1
  1. 1.Department of PediatricsUniversity of California San FranciscoSan FranciscoUSA
  2. 2.University of California Berkeley School of Public HealthBerkeleyUSA

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