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Impact of maternal body mass index and gestational weight gain on pregnancy complications: An individual participant data meta-analysis of European, North American and Australian cohorts.

  • S. Santos
  • , E. Voerman
  • , P. Amiano
  • , H. Barros
  • , L. J. Beilin
  • , A. Bergström
  • , M. A. Charles
  • , L. Chatzi
  • , C. Chevrier
  • , G. P. Chrousos
  • , E. Corpeleijn
  • , O. Costa
  • , N. Costet
  • , S. Crozier
  • , Graham Devereux
  • , M. Doyon
  • , M. Eggesbø
  • , M. P. Fantini
  • , S. Farchi
  • , F. Forastiere
  • V. Georgiu, K. M. Godfrey, D. Gori, V. Grote, W. Hanke, I. Hertz-Picciotto, B. Heude, M. F. Hivert, D. Hryhorczuk, R. C. Huang, H. Inskip, A. M. Karvonen, L. C. Kenny, B. Koletzko, L. K. Küpers, H. Lagström, I. Lehmann, P. Magnus, R. Majewska, J. Mäkelä, Y. Manios, F. M. McAuliffe, S. W. McDonald, J. Mehegan, E. Melén, M. Mommers, C. S. Morgen, G. Moschonis, D. Murray, C. Ní Chaoimh, E. A. Nohr, A. M. Nybo Andersen, E. Oken, A. J.J.M. Oostvogels, A. Pac, E. Papadopoulou, J. Pekkanen, C. Pizzi, K. Polanska, D. Porta, L. Richiardi, S. L. Rifas-Shiman, N. Roeleveld, L. Ronfani, A. C. Santos, M. Standl, H. Stigum, C. Stoltenberg, E. Thiering, C. Thijs, M. Torrent, S. C. Tough, T. Trnovec, S. Turner, M. M.H.J. van Gelder, L. van Rossem, A. von Berg, M. Vrijheid, T. G.M. Vrijkotte, J. West, A. H. Wijga, J. Wright, O. Zvinchuk, T. I.A. Sørensen, D. A. Lawlor, R. Gaillard, V. W.V. Jaddoe
  • Erasmus University Rotterdam
  • Public Health Division of Gipuzkoa
  • Instituto de Investigación Sanitaria Biodonostia
  • Instituto de Salud Carlos III
  • University of Porto
  • Royal Perth Hospital
  • Karolinska Institutet
  • Stockholm County Council
  • Institut national de la santé et de la recherche médicale
  • Université Paris Cité
  • University of Southern California
  • University of Crete
  • Maastricht University
  • Irset–Research Institute for Environmental and Occupational Health
  • National and Kapodistrian University of Athens
  • University of Groningen
  • University of Valencia
  • MRC Lifecourse Epidemiology Unit
  • Centre Hospitalier Universitaire de Sherbrooke
  • Norwegian Institute of Public Health
  • University of Bologna
  • Department of Epidemiology Lazio Regional Health Service
  • University Hospital Southampton NHS Foundation Trust
  • Ludwig Maximilian University of Munich
  • Nofer Institute of Occupational Medicine
  • University of California at Davis
  • Harvard University
  • Massachusetts General Hospital
  • University of Illinois at Chicago
  • the University of Western Australia
  • National Institute for Health and Welfare
  • University College Cork, Cork University Maternity Hospital
  • University of Bristol
  • Wageningen University & Research
  • University of Turku
  • Helmholtz Centre for Environmental Research
  • Jagiellonian University Medical College
  • Harokopio University
  • University College Dublin
  • University of Calgary
  • University of Southern Denmark
  • University of Copenhagen
  • La Trobe University
  • University College Cork
  • Academic Medical Center
  • University of Helsinki
  • University of Turin
  • Radboud University Nijmegen
  • IRCCS Ospedale Infantile Burlo Garofolo - Trieste
  • Helmholtz Zentrum München - German Research Center for Environmental Health
  • University of Bergen
  • Balearic Islands Health Service
  • Slovak Medical University
  • NHS Grampian
  • Utrecht University
  • Marien-Hospital Wesel
  • Universitat de Barcelona
  • Pompeu Fabra University
  • Bradford Teaching Hospitals NHS Foundation Trust
  • National Institute of Public Health and the Environment
  • Institute of Pediatrics, Obstetrics and Gynecology

Research output: Contribution to journalArticlepeer-review

518 Citations (Scopus)

Abstract

OBJECTIVE

To assess the separate and combined associations of maternal pre-pregnancy BMI and gestational weight gain with the risks of pregnancy complications and their population impact.

DESIGN

Individual participant data meta-analysis of 39 cohorts.

SETTING

Europe, North America and Oceania.

POPULATION

265,270 births.

METHODS

Information on maternal pre-pregnancy BMI, gestational weight gain, and pregnancy complications was obtained. Multilevel binary logistic regression models were used.

MAIN OUTCOME MEASURES

Gestational hypertension, pre-eclampsia, gestational diabetes, preterm birth, small and large size for gestational age at birth.

RESULTS

Higher maternal pre-pregnancy BMI and gestational weight gain were, across their full ranges, associated with higher risks of gestational hypertensive disorders, gestational diabetes and large size for gestational age at birth. Preterm birth risk was higher at lower and higher BMI and weight gain. Compared to normal weight mothers with medium gestational weight gain, obese mothers with high gestational weight gain had the highest risk of any pregnancy complication (Odds Ratio 2.51 (95% Confidence Interval 2.31, 2.74)). We estimated that 23.9% of any pregnancy complication was attributable to maternal overweight/obesity and 31.6% of large size for gestational age infants was attributable to excessive gestational weight gain.

CONCLUSIONS

Maternal pre-pregnancy BMI and gestational weight gain are, across their full ranges, associated with the risks of pregnancy complications. Obese mothers with high gestational weight gain are at the highest risk of pregnancy complications. Promoting a healthy pre-pregnancy BMI and gestational weight gain may reduce the burden of pregnancy complications and ultimately the risk of maternal and neonatal morbidity. This article is protected by copyright. All rights reserved.

Original languageEnglish
Pages (from-to)984-995
Number of pages12
JournalBJOG: An International Journal of Obstetrics and Gynaecology
Volume126
Issue number8
Early online date20 Feb 2019
DOIs
Publication statusPublished - 1 Jul 2019

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Birthweight
  • body mass index
  • pregnancy complications
  • preterm birth
  • weight gain

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