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Maternal body mass index and the prevalence of spontaneous and elective preterm deliveries in an Irish obstetric population: a retrospective cohort study

Vinturache, Angela, McKeating, Aoife, Daly, Niamh, Sheehan, Sharon, Turner, Michael·2017·BMJ Open
DOI 10.1136/bmjopen-2016-015258
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Abstract

Objective: To estimate the association between maternal body mass index (BMI) and risk of spontaneous preterm delivery (sPTD) and elective preterm delivery (ePTD) in singleton and multiple pregnancies. Design: Retrospective cohort study. Setting: Electronic records of all deliveries from 2009 through 2013 in a tertiary university hospital were abstracted for demographic and obstetrical information. Participants: A total of 38 528 deliveries were included. Participants with missing data were excluded from the study. BMI was calculated from the measurement of height and weight at the first prenatal visit and categorised. Sonographic confirmation of gestational age was standard. Outcome measures: Primary outcomes, sPTD and ePTD in singleton and multiple pregnancies, were evaluated by multinomial logistic regression analyses, stratified by parity, controlling for confounding variables. Results: Overall rate of PTD was 5.9%, from which 2.7% were sPTD and 3.2% ePTD. The rate of PTD was 50.4% in multiple pregnancies and 5.0% in singleton pregnancies. The risk of sPTD was increased in obese nulliparas (adjusted OR (aOR) 2.8, 95% CI 1.7 to 4.4) and underweight multiparas (aOR 2.2, 95% CI 1.3 to 3.8). The risk of ePTD was increased in underweight nulliparas (aOR 1.8; 95% CI 1.04 to 3.4) and severely obese multiparas (aOR 1.4, 95% CI 1.02 to 3.8). Severe obesity increased the risk of both sPTD (aOR 1.4; 95% CI 1.01 to 2.1) and ePTD (aOR 1.4; 95% CI 1.1 to 1.8) in singleton pregnancies. Obesity did not influence the rate of either sPTD or ePTD in multiple pregnancies. Conclusion: Maternal obesity is an independent risk factor for PTD in singleton pregnancies but not in multiple pregnancies. Obesity and nulliparity increase the risk of sPTD, whereas obesity and multiparity increase the risk of ePTD.

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Research works printed but not linked: 63

  1. Institute of Medicine . Leading health indicators for healthy people 2020: letter report. Washington (DC): The National Academies Press , 2011.
  2. 10.1016/S0140-6736(12)60820-4 · DOI · Paper page
  3. 10.1186/1471-2393-10-S1-S1 · DOI · Paper page
  4. 10.1016/j.ejogrb.2004.07.041 · DOI
  5. 10.1136/bmj.c3428 · DOI · Paper page
  6. Schaaf, 2013, Ethnic and racial disparities in the risk of preterm birth: a systematic review and meta-analysis, Am J Perinatol, 30, 433
  7. 10.1007/s10995-009-0546-2 · DOI
  8. 10.1067/mob.2003.339 · DOI
  9. Carolan, 2011, Advanced maternal age and adverse perinatal outcome: a review of the evidence, Midwifery, 27, 793, 10.1016/j.midw.2010.07.006 · DOI
  10. 10.1111/j.1471-0528.1998.tb10266.x · DOI · Paper page
  11. 10.1016/j.amepre.2010.05.012 · DOI · Paper page
  12. 10.3109/0167482X.2010.518776 · DOI
  13. 10.3109/00016349.2010.486827 · DOI
  14. 10.1016/S1701-2163(16)35337-3 · DOI
  15. Han, 2011, Maternal underweight and the risk of preterm birth and low birth weight: a systematic review and meta-analyses, Int J Epidemiol, 40, 65, 10.1093/ije/dyq195 · DOI
  16. 10.3109/14767050903042561 · DOI
  17. 10.1111/ppe.12125 · DOI
  18. Martin, 2013, Births: final data for 2012, Natl Vital Stat Rep, 62, 1
  19. 10.1016/j.siny.2010.06.006 · DOI
  20. 10.1053/j.semperi.2012.02.001 · DOI
  21. Lucovnik, 2015, Maternal obesity in singleton versus twin gestations: a population-based matched case-control study, J Matern Fetal Neonatal Med, 28, 623, 10.3109/14767058.2014.928854 · DOI
  22. 10.1093/aje/kwn092 · DOI
  23. 10.3945/an.111.001081 · DOI
  24. Rasmussen KM , Yaktine AL . Weight gain during pregnancy: reexamining the guidelines: The National Academy Press, 2009.
  25. 10.1111/aogs.12685 · DOI
  26. Turner, 2013, Obesity levels in a national cohort of women 9 months after delivery, Am J Obstet Gynecol, 209, e121, 10.1016/j.ajog.2013.04.020 · DOI
  27. Kent, 2013, Correlation between birth weight and maternal body composition, Obstet Gynecol, 121, 46, 10.1097/AOG.0b013e31827a0052 · DOI
  28. Lynch, 2008, Obesity and mode of delivery in primigravid and multigravid women, Am J Perinatol, 25, 163, 10.1055/s-2008-1061496 · DOI
  29. 10.3109/00016341003801706 · DOI
  30. Morisaki, 2014, Risk factors for spontaneous and provider-initiated preterm delivery in high and low human development Index countries: a secondary analysis of the world health organization multicountry survey on maternal and newborn health, BJOG, 121, 101, 10.1111/1471-0528.12631 · DOI
  31. 10.1186/s12884-014-0422-y · DOI
  32. Salihu, 2012, Does maternal obesity cause preeclampsia? A systematic review of the evidence, Minerva Ginecol, 64, 259
  33. Hauth, 2011, Maternal insulin resistance and preeclampsia, Am J Obstet Gynecol, 204:327, e321
  34. 10.1210/jc.2004-0548 · DOI
  35. 10.1136/bmj.38380.674340.E0 · DOI · Paper page
  36. 10.2105/AJPH.2005.074294 · DOI
  37. 10.1007/s00404-010-1740-6 · DOI
  38. 10.1111/j.1365-3016.2007.00762.x · DOI
  39. 10.1016/j.ajog.2004.09.021 · DOI · Paper page
  40. 10.1001/jama.2013.6295 · DOI · Paper page
  41. Scholl, 1992, Young maternal age and parity. Influences on pregnancy outcome, Ann Epidemiol, 2, 565, 10.1016/1047-2797(92)90001-7 · DOI
  42. 10.1016/j.ajog.2004.10.593 · DOI
  43. 10.1093/ije/dyl284 · DOI · Paper page
  44. Kozuki, 2013, The associations of parity and maternal age with small-for-gestational-age, preterm, and neonatal and infant mortality: a meta-analysis, BMC Public Health, 13, S2, 10.1186/1471-2458-13-S3-S2 · DOI
  45. 10.1001/jama.284.3.335 · DOI
  46. 10.3390/ijerph10062296 · DOI · Paper page
  47. 10.1097/GRF.0b013e31816f28de · DOI
  48. 10.1023/B:MACI.0000025726.53515.65 · DOI
  49. 10.1086/338781 · DOI
  50. Dolatian, 2012, Preterm delivery and psycho-social determinants of health based on World Health Organization model in Iran: a narrative review, Glob J Health Sci, 5, 52, 10.5539/gjhs.v5n1p52 · DOI
  51. 10.1016/j.puhe.2004.06.005 · DOI
  52. Bahadori, 2015, The Social Determinants of Health (SDH) in Iran: a systematic review article, Iran J Public Health, 44, 728
  53. 10.1136/adc.2008.150433 · DOI
  54. 10.1016/S0277-9536(03)00200-4 · DOI
  55. 10.1007/s10995-008-0330-8 · DOI
  56. 10.1093/eurpub/ckr089 · DOI · Paper page
  57. Alexander, 1996, Conceptualization, measurement, and use of gestational age. I. Clinical and public health practice, J Perinatol, 16, 53
  58. Alexander, 1990, Gestational age reporting and preterm delivery, Public Health Rep, 105, 267
  59. 10.1038/oby.2010.25 · DOI
  60. 10.1097/00001648-199003000-00011 · DOI
  61. 10.1007/s10995-006-0157-0 · DOI
  62. O’Higgins, 2014, The relationship between gestational weight gain and fetal growth: time to take stock?, J Perinat Med, 42, 409, 10.1515/jpm-2013-0209 · DOI
  63. Schumann, 2014, A review of national health policies and professional guidelines on maternal obesity and weight gain in pregnancy, Clin Obes, 4, n/a, 10.1111/cob.12062 · DOI

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Metadata

Authors
Vinturache, A., McKeating, A., Daly, N., Sheehan, S., & Turner, M.
Venue
BMJ Open
Publisher
BMJ
Published
2017-10
Volume
7
Issue
10
Pages
e015258
ISSN
2044-6055
DOI
10.1136/bmjopen-2016-015258
Cited by
23
References
5
Language
en

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Vinturache, A., McKeating, A., Daly, N., Sheehan, S., & Turner, M. (2017). Maternal body mass index and the prevalence of spontaneous and elective preterm deliveries in an Irish obstetric population: a retrospective cohort study. BMJ Open. https://doi.org/10.1136/bmjopen-2016-015258

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