Evidence map›Paper›PMID 28982832›Full record

ArticleBMJ open2017

Incidence, risk factors and perinatal outcomes for placenta accreta in Australia and New Zealand: a case-control study.

Cynthia M Farquhar, Zhuoyang Li, Sarah Lensen, Claire McLintock, Wendy Pollock, Michael J Peek, David Ellwood, Marian Knight, Caroline Se Homer, Geraldine Vaughan and 2 more

Registry-linked trialOpen access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMJ open, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05403203 (Prediction of Need of Blood Transfusion > 4 Units of Packed RBCS in Cases Diagnosed With Placenta Previa During Cesarean Section .), which is not on this map. Cited by 40 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 3 pooled it
14.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05403203 unknown statusnot on this mapstarted 2022, after this paper: background citation

Prediction of Need of Blood Transfusion > 4 Units of Packed RBCS in Cases Diagnosed With Placenta Previa During Cesarean Section .

TypeobservationalSponsorAssiut UniversityRan2022 to 2023Enrolled100ConditionsPlacenta Previa Bleeding
3 · Its place in the literature

Who cites it

40 citing papers in PubMed, 3 syntheses or guidelines pooled it, 115 citations in OpenAlex.

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  16. Expression of sirtuin 2 and 7 in placenta accreta spectrum.Revista da Associacao Medica Brasileira (1992) · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 6 institutions in 2 countries.

Cynthia M FarquharDepartment of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand.
Zhuoyang LiAustralian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney, New South Wales, Australia.
Sarah LensenDepartment of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand.ORCID http://orcid.org/0000-0002-1694-1142
Claire McLintockDepartment of National Women's Health, Auckland City Hospital, Auckland, New Zealand.
Wendy PollockDepartment of Nursing, Melbourne School of Health Sciences, The University of Melbourne and School of Nursing and Midwifery, Melbourne, Australia.
Michael J PeekDepartment of ANU Medical School, Australian National University, Canberra, Australia.
David EllwoodSchool of Medicine, Griffith University, Gold Coast, Queensland, Australia.
Marian KnightNational Perinatal Epidemiology Unit, Oxford, UK.
Caroline Se HomerAustralian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney, New South Wales, Australia.ORCID http://orcid.org/0000-0002-7454-3011
Geraldine VaughanAustralian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney, New South Wales, Australia.
Alex WangAustralian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney, New South Wales, Australia.
Elizabeth SullivanAustralian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney, New South Wales, Australia.
University of Technology Sydney · AUUniversity of Auckland · NZAuckland City Hospital · NZAustralian National University · AUGriffith University · AUThe University of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveEstimate the incidence of placenta accreta and describe risk factors, clinical practice and perinatal outcomes.

designCase-control study.

settingSites in Australia and New Zealand with at least 50 births per year.

participantsCases were women giving birth (≥20 weeks or fetus ≥400 g) who were diagnosed with placenta accreta by antenatal imaging, at operation or by pathology specimens between 2010 and 2012. Controls were two births immediately prior to a case. A total of 295 cases were included and 570 controls.

methodsData were collected using the Australasian Maternity Outcomes Surveillance System. PRIMARY AND SECONDARY OUTCOME MEASURES: Incidence, risk factors (eg, prior caesarean section (CS), maternal age) and clinical outcomes of placenta accreta (eg CS, hysterectomy and death).

resultsThe incidence of placenta accreta was 44.2/100 000 women giving birth (95% CI 39.4 to 49.5); however, this may overestimated due to the case definition used. In primiparous women, an increased odds of placenta accreta was observed in older women (adjusted OR (AOR) women≥40 vs <30: 19.1, 95% CI 4.6 to 80.3) and current multiple birth (AOR: 6.1, 95% CI 1.1 to 34.1). In multiparous women, independent risk factors were prior CS (AOR ≥2 prior sections vs 0: 13.8, 95% CI 7.4 to 26.1) and current placenta praevia (AOR: 36.3, 95% CI 14.0 to 93.7). There were two maternal deaths (case fatality rate 0.7%).Women with placenta accreta were more likely to have a caesarean section (AOR: 4.6, 95% CI 2.7 to 7.6) to be admitted to the intensive care unit (ICU)/high dependency unit (AOR: 46.1, 95% CI 22.3 to 95.4) and to have a hysterectomy (AOR: 209.0, 95% CI 19.9 to 875.0). Babies born to women with placenta accreta were more likely to be preterm, be admitted to neonatal ICU and require resuscitation.

Indexed as

AdultAustraliaCase-Control StudiesCesarean SectionFemaleHumansIncidenceLogistic ModelsMaternal AgeMiddle AgedMultivariate AnalysisNew ZealandParityPlacenta AccretaPlacenta PreviaPregnancycaesareanc-sectionplacenta accretaplacentation

Identifiers

PMID28982832
PMCPMC5640005
OpenAlexW2761849748

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.