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Poster session II Clinical obstetrics, diabetes, labor, medical-surgical-disease, physiology/endocrinology, prematurity: Abstracts 237 - 386| Volume 208, ISSUE 1, SUPPLEMENT , S110, January 01, 2013

238: BMI and gestational diabetes

      Objective

      To examine the utility of body mass index as a screening tool for gestational diabetes across ethic subgroups.

      Study Design

      This is a retrospective cohort study of all pregnant women with recorded body mass index (BMI) and gestational diabetes (GDM) status in the California Birth Registry of 2006. Rates of GDM were stratified by increasing BMI in the underweight to severely obese ranges. These results were then further stratified by self-described race for Caucasian, African-American, Hispanic and Asian women. Chi squared tests and multivariable logistic regression analyses were used for statistical analysis.

      Results

      We found that rates of GDM increased consistently with increasing BMI. Within the non-obese range (BMI <30) Caucasian, African-American and Hispanic women had comparable rates of GDM, and all were less than 10%. For each incremental increase in BMI, Asian women experienced a greater rate of GDM than their non-Asian counterparts. In the non-obese range, rates of GDM in Asian women were as high as 15.4% (BMI 28-29.9). However, even at a BMI of greater than 50, the incidence of GDM was still less than 30%.