Identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.

<h4>Objective</h4>To provide regional estimates of the prevalence of maternal haemorrhage and explore the effect of methodological differences between studies on any observed regional variation.<h4>Methods</h4>We conducted a systematic review of the prevalence of maternal hae...

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Autores principales:	Clara Calvert, Sara L Thomas, Carine Ronsmans, Karen S Wagner, Alma J Adler, Veronique Filippi
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6e928c80f7c142fa87cc31302a58180e
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spelling	oai:doaj.org-article:6e928c80f7c142fa87cc31302a58180e2021-11-18T07:11:35ZIdentifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.1932-620310.1371/journal.pone.0041114https://doaj.org/article/6e928c80f7c142fa87cc31302a58180e2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22844432/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Objective</h4>To provide regional estimates of the prevalence of maternal haemorrhage and explore the effect of methodological differences between studies on any observed regional variation.<h4>Methods</h4>We conducted a systematic review of the prevalence of maternal haemorrhage, defined as blood loss greater than or equal to 1) 500 ml or 2) 1000 ml in the antepartum, intrapartum or postpartum period. We obtained regional estimates of the prevalence of maternal and severe maternal haemorrhage by conducting meta-analyses and used meta-regression to explore potential sources of between-study heterogeneity.<h4>Findings</h4>No studies reported the prevalence of antepartum haemorrhage (APH) according to our definitions. The prevalence of postpartum haemorrhage (PPH) (blood loss ≥500 ml) ranged from 7.2% in Oceania to 25.7% in Africa. The prevalence of severe PPH (blood loss ≥1000 ml) was highest in Africa at 5.1% and lowest in Asia at 1.9%. There was strong evidence of between-study heterogeneity in the prevalence of PPH and severe PPH in most regions. Meta-regression analyses suggested that region and method of measurement of blood loss influenced prevalence estimates for both PPH and severe PPH. The regional patterns changed after adjusting for the other predictors of PPH indicating that, compared with European women, Asian women have a lower prevalence of PPH.<h4>Conclusions</h4>We found evidence that Asian women have a very low prevalence of PPH compared with women in Europe. However, more reliable estimates will only be obtained with the standardisation of the measurement of PPH so that the data from different regions are comparable.Clara CalvertSara L ThomasCarine RonsmansKaren S WagnerAlma J AdlerVeronique FilippiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 7, p e41114 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Clara Calvert Sara L Thomas Carine Ronsmans Karen S Wagner Alma J Adler Veronique Filippi Identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.
description	<h4>Objective</h4>To provide regional estimates of the prevalence of maternal haemorrhage and explore the effect of methodological differences between studies on any observed regional variation.<h4>Methods</h4>We conducted a systematic review of the prevalence of maternal haemorrhage, defined as blood loss greater than or equal to 1) 500 ml or 2) 1000 ml in the antepartum, intrapartum or postpartum period. We obtained regional estimates of the prevalence of maternal and severe maternal haemorrhage by conducting meta-analyses and used meta-regression to explore potential sources of between-study heterogeneity.<h4>Findings</h4>No studies reported the prevalence of antepartum haemorrhage (APH) according to our definitions. The prevalence of postpartum haemorrhage (PPH) (blood loss ≥500 ml) ranged from 7.2% in Oceania to 25.7% in Africa. The prevalence of severe PPH (blood loss ≥1000 ml) was highest in Africa at 5.1% and lowest in Asia at 1.9%. There was strong evidence of between-study heterogeneity in the prevalence of PPH and severe PPH in most regions. Meta-regression analyses suggested that region and method of measurement of blood loss influenced prevalence estimates for both PPH and severe PPH. The regional patterns changed after adjusting for the other predictors of PPH indicating that, compared with European women, Asian women have a lower prevalence of PPH.<h4>Conclusions</h4>We found evidence that Asian women have a very low prevalence of PPH compared with women in Europe. However, more reliable estimates will only be obtained with the standardisation of the measurement of PPH so that the data from different regions are comparable.
format	article
author	Clara Calvert Sara L Thomas Carine Ronsmans Karen S Wagner Alma J Adler Veronique Filippi
author_facet	Clara Calvert Sara L Thomas Carine Ronsmans Karen S Wagner Alma J Adler Veronique Filippi
author_sort	Clara Calvert
title	Identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.
title_short	Identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.
title_full	Identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.
title_fullStr	Identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.
title_full_unstemmed	Identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.
title_sort	identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/6e928c80f7c142fa87cc31302a58180e
work_keys_str_mv	AT claracalvert identifyingregionalvariationintheprevalenceofpostpartumhaemorrhageasystematicreviewandmetaanalysis AT saralthomas identifyingregionalvariationintheprevalenceofpostpartumhaemorrhageasystematicreviewandmetaanalysis AT carineronsmans identifyingregionalvariationintheprevalenceofpostpartumhaemorrhageasystematicreviewandmetaanalysis AT karenswagner identifyingregionalvariationintheprevalenceofpostpartumhaemorrhageasystematicreviewandmetaanalysis AT almajadler identifyingregionalvariationintheprevalenceofpostpartumhaemorrhageasystematicreviewandmetaanalysis AT veroniquefilippi identifyingregionalvariationintheprevalenceofpostpartumhaemorrhageasystematicreviewandmetaanalysis
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Identifying regional variation in the prevalence of postpartum haemorrhage: a systematic review and meta-analysis.

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