A prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight.
<h4>Background</h4>Maternal body mass index (BMI) below or above the reference interval (18.5-24.9 kg/m2) is associated with adverse pregnancy outcomes. Whether BMI exerts an effect within the reference interval is unclear. Therefore, we assessed the association between adverse pregnancy...
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2021
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oai:doaj.org-article:232c4fd268e742569f690fe37ff6c9f82021-12-02T20:14:14ZA prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight.1932-620310.1371/journal.pone.0257722https://doaj.org/article/232c4fd268e742569f690fe37ff6c9f82021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0257722https://doaj.org/toc/1932-6203<h4>Background</h4>Maternal body mass index (BMI) below or above the reference interval (18.5-24.9 kg/m2) is associated with adverse pregnancy outcomes. Whether BMI exerts an effect within the reference interval is unclear. Therefore, we assessed the association between adverse pregnancy outcomes and BMI, in particular within the reference interval, in a general unselected pregnant population.<h4>Methods</h4>Data was extracted from a prospective population-based multicentre cohort (Risk Estimation for PrEgnancy Complications to provide Tailored care (RESPECT) study) conducted between December 2012 to January 2014. BMI was studied in categories (I: <18.5, II: 18.5-19.9, III: 20.0-22.9, IV: 23.0-24.9, V: 25.0-27.4, VI: 27.5-29.9, VII: >30.0 kg/m2) and as a continuous variable within the reference interval. Adverse pregnancy outcomes were defined as composite endpoints for maternal, neonatal or any pregnancy complication, and for adverse pregnancy outcomes individually. Linear trends were assessed using linear-by-linear association analysis and (adjusted) relative risks by regression analysis.<h4>Results</h4>The median BMI of the 3671 included women was 23.2 kg/m2 (IQR 21.1-26.2). Adverse pregnancy outcomes were reported in 1256 (34.2%). Linear associations were observed between BMI categories and all three composite endpoints, and individually for pregnancy-induced hypertension (PIH), preeclampsia, gestational diabetes mellitus (GDM), large-for-gestational-age (LGA) neonates; but not for small-for-gestational-age neonates and preterm birth. Within the reference interval, BMI was associated with the composite maternal endpoint, PIH, GDM and LGA, with adjusted relative risks of 1.15 (95%CI 1.06-1.26), 1.12 (95%CI 1.00-1.26), 1.31 (95%CI 1.11-1.55) and 1.09 (95%CI 1.01-1.17).<h4>Conclusions</h4>Graded increase in maternal BMI appears to be an indicator of risk for adverse pregnancy outcomes even among women with a BMI within the reference interval. The extent to which BMI directly contributes to the increased risk in this group should be evaluated in order to determine strategies most valuable for promoting safety and long-term health for mothers and their offspring.Fieke van HoornLeon de WitLenie van RossemMarielle JambroesFloris GroenendaalAnneke KweeMarije Lamain-de RuiterArie FranxBas B van RijnMaria P H KosterMireille N BekkerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0257722 (2021) |
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Medicine R Science Q |
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Medicine R Science Q Fieke van Hoorn Leon de Wit Lenie van Rossem Marielle Jambroes Floris Groenendaal Anneke Kwee Marije Lamain-de Ruiter Arie Franx Bas B van Rijn Maria P H Koster Mireille N Bekker A prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight. |
| description |
<h4>Background</h4>Maternal body mass index (BMI) below or above the reference interval (18.5-24.9 kg/m2) is associated with adverse pregnancy outcomes. Whether BMI exerts an effect within the reference interval is unclear. Therefore, we assessed the association between adverse pregnancy outcomes and BMI, in particular within the reference interval, in a general unselected pregnant population.<h4>Methods</h4>Data was extracted from a prospective population-based multicentre cohort (Risk Estimation for PrEgnancy Complications to provide Tailored care (RESPECT) study) conducted between December 2012 to January 2014. BMI was studied in categories (I: <18.5, II: 18.5-19.9, III: 20.0-22.9, IV: 23.0-24.9, V: 25.0-27.4, VI: 27.5-29.9, VII: >30.0 kg/m2) and as a continuous variable within the reference interval. Adverse pregnancy outcomes were defined as composite endpoints for maternal, neonatal or any pregnancy complication, and for adverse pregnancy outcomes individually. Linear trends were assessed using linear-by-linear association analysis and (adjusted) relative risks by regression analysis.<h4>Results</h4>The median BMI of the 3671 included women was 23.2 kg/m2 (IQR 21.1-26.2). Adverse pregnancy outcomes were reported in 1256 (34.2%). Linear associations were observed between BMI categories and all three composite endpoints, and individually for pregnancy-induced hypertension (PIH), preeclampsia, gestational diabetes mellitus (GDM), large-for-gestational-age (LGA) neonates; but not for small-for-gestational-age neonates and preterm birth. Within the reference interval, BMI was associated with the composite maternal endpoint, PIH, GDM and LGA, with adjusted relative risks of 1.15 (95%CI 1.06-1.26), 1.12 (95%CI 1.00-1.26), 1.31 (95%CI 1.11-1.55) and 1.09 (95%CI 1.01-1.17).<h4>Conclusions</h4>Graded increase in maternal BMI appears to be an indicator of risk for adverse pregnancy outcomes even among women with a BMI within the reference interval. The extent to which BMI directly contributes to the increased risk in this group should be evaluated in order to determine strategies most valuable for promoting safety and long-term health for mothers and their offspring. |
| format |
article |
| author |
Fieke van Hoorn Leon de Wit Lenie van Rossem Marielle Jambroes Floris Groenendaal Anneke Kwee Marije Lamain-de Ruiter Arie Franx Bas B van Rijn Maria P H Koster Mireille N Bekker |
| author_facet |
Fieke van Hoorn Leon de Wit Lenie van Rossem Marielle Jambroes Floris Groenendaal Anneke Kwee Marije Lamain-de Ruiter Arie Franx Bas B van Rijn Maria P H Koster Mireille N Bekker |
| author_sort |
Fieke van Hoorn |
| title |
A prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight. |
| title_short |
A prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight. |
| title_full |
A prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight. |
| title_fullStr |
A prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight. |
| title_full_unstemmed |
A prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight. |
| title_sort |
prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: focus on normal weight. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2021 |
| url |
https://doaj.org/article/232c4fd268e742569f690fe37ff6c9f8 |
| work_keys_str_mv |
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1718374693535219712 |