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  • Original Article
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Optimal gestational weight gain: prepregnancy BMI specific influences on adverse pregnancy and infant health outcomes

Abstract

Objective:

The Institute of Medicine (IOM) 2009 gestational weight gain (GWG) guidelines are based on prepregnancy body mass index (BMI) categories. We intended to refine optimal GWG for each prepregnancy BMI unit in relation to the risk of small- and large-for-gestational-age (SGA and LGA) births, cesarean section (C-section) and infant death.

Study Design:

We used data from 836,841 Ohio birth records from 2006 to 2012, and applied generalized additive models to calculate optimal GWG by prepregnancy BMI unit.

Results:

The suggested optimal GWG was generally similar to IOM 2009 GWG guidelines for prepregnancy BMIs <25 kg m2, but higher for prepregnancy BMIs 25 to 32 kg m2 and lower for BMIs 38 to 50 kg m2. The suggested optimal GWG was 14 to 18.5, 13 to 17, 11.5 to 16, 8.5 to 12.5, 4 to 10, 3 to 7, 1.5 to 6 and 1.5 to 4.5 kg for prepregnancy BMIs 15, 20, 25, 30, 35, 40, 45 and 50 kg m2, respectively.

Conclusion:

This research suggests that GWG recommendations may be refined at individual prepregnancy BMI levels.

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Acknowledgements

The research work was partially supported by grants from National Institutes of Health (R01ES020349, RC4ES019755, P30ES006096), Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, and March of Dimes Grant 22-FY13-543 for the March of Dimes Prematurity Research Center Ohio Collaborative.

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Correspondence to A Chen.

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Supplementary Information accompanies the paper on the Journal of Perinatology website

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Chen, A., Xie, C., Vuong, A. et al. Optimal gestational weight gain: prepregnancy BMI specific influences on adverse pregnancy and infant health outcomes. J Perinatol 37, 369–374 (2017). https://doi.org/10.1038/jp.2016.267

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