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Comparative Study
. 2009 May;26(5):365-71.
doi: 10.1055/s-0028-1110088. Epub 2008 Dec 11.

The effects of obesity and weight gain in young women on obstetric outcomes

Urania Magriples  1 , Trace S Kershaw, Sharon Schindler Rising, Claire Westdahl, Jeannette R Ickovics
Affiliations
Comparative Study

The effects of obesity and weight gain in young women on obstetric outcomes

Urania Magriples et al. Am J Perinatol. 2009 May.

Abstract

We investigated body mass index (BMI) and weight gain among pregnant women (ages 14 to 25) and assessed the relationship of BMI and weight gain on birth outcomes. We performed a secondary analysis of 841 women enrolled in a randomized controlled trial receiving prenatal care in two university-affiliated clinics. Almost half the patients were overweight or obese. An average of 32.3 +/- 23.6 pounds was gained in pregnancy with only 25.3% gaining the recommended weight and over half overgaining. Weight gain had a significant relationship to birth weight. Multivariate analysis showed that prepregnancy BMI but not weight gain was a significant predictor of cesarean delivery (odds ratio [OR] 1.91, confidence interval [CI] 1.24 to 2.69, P < 0.0001). When large-for-gestational-age infants were removed from the analysis, there was still a significant effect of BMI on cesarean delivery (OR 1.76, CI 1.17 to 2.66, P = 0.007) but not of weight gain (OR 1.45, CI 0.94 to 2.17, P = 0.093). Prepregnancy BMI is a more significant predictor of cesarean delivery than pregnancy weight gain in young women.

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Figures

Figure 1
Figure 1
Birth weight by gestation by body mass index (BMI) class (χ2 = 17.31, p = 0.008).
Figure 2
Figure 2
Birth weight by gestation by weight gain (χ2 = 37.68, p = 0.001).
Figure 3
Figure 3
Institute of Medicine (IOM) weight gain by body mass index (BMI) class.
See this image and copyright information in PMC

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