215150 Association Between Inadequate Gestational Weight Gain and Infant Mortality Among U.S. Infants Born in 2002

Monday, November 8, 2010 : 10:30 AM - 10:45 AM

Regina Davis, MPH, CHES , Department of Family Science, University of Maryland, College Park, College Park, MD
Sandra Hofferth, PhD , Department of Family Science, University of Maryland, College Park, College Park, MD
BACKGROUND: More than 28,000 babies died before their first birthday in the United States in 2002. Low birth weight (less than 2500g) is the second leading causes of U.S. infant deaths. Researchers have consistently demonstrated a strong relationship between maternal weight gain and infant low birth weight. The purpose of this study was to determine the relative importance of inadequate gestational weight gain as a cause of infant mortality. METHODS: The study population was drawn from a random sample of 100,000 records from the National Center for Health Statistics' 2002 Linked Birth/ Infant Death Data Set. Descriptive and proportional hazards regression analyses were used to assess the risk of infant mortality associated with inadequate gestational weight gain compared to normal weight gain. RESULTS: Inadequate gestational weight gain was associated with increased odds of infant death. The increased risk remained after adjustment for gestational age (AOR [adjusted odds ratio] =2.263, p<0.0001, 95% CI [confidence interval]: 1.87, 2.74), maternal age (AOR=2.23, p<0.0001, 95% CI: 1.84, 2.70), low birth weight (AOR=1.92, p<0.0001, 95% CI: 1.59, 2.33), maternal race (1.89, p<0.0001, 95% CI: 1.56, 2.23), and maternal education (AOR=1.84, p<0.0001, 95% CI: 1.59, 2.34). Among racial and ethnic subgroups, African American women with inadequate maternal weight gain were 1.3 times (p<0.01, 95% CI: 1.08, 1.63) more likely than white women to have infant death. CONCLUSION: There is a substantial and significant association between inadequate gestational weight gain and infant death.

Learning Areas:
Basic medical science applied in public health
Implementation of health education strategies, interventions and programs
Public health or related laws, regulations, standards, or guidelines
Public health or related research

Learning Objectives:
1. Identify the odds of infant mortality based on several demographic and medical risk factors. 2. Identify racial/ethnic groups with the greatest risk of infant mortality in the presence of inadequate gestational weight gain. 3. Discuss the implications of the study findings for pregnant women's nutrition education. 4. Discuss the implications of the study findings in the context of the new 2009 Institute of Medicine (IOM) maternal weight gain recommendations.

Keywords: Infant Mortality, Pregnancy Outcomes

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am a PhD candidate specializing in Maternal and Child Health topic areas such as, women's reproductive health; maternal, infant, and child morbidity and mortality; disease prevention, and health education.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.