Evidence map›Paper›PMID 29575304›Full record

ArticleUltrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology2019

Comparison of three commercially available placental growth factor-based tests in women with suspected preterm pre-eclampsia: the COMPARE study.

F P McCarthy, C Gill, P T Seed, K Bramham, L C Chappell, A H Shennan

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 2 pooled it
5.9field-weighted citation impact, top 3% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 54 citations in OpenAlex.

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  5. The FemTech revolution: Unlocking the potential of new technology for optimizing pregnancy outcomes in low- and middle-income countries and remote areas.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
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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

6 authors at 1 institution in 2 countries.

F P McCarthyDepartment of Women and Children's Health, King's College London, St Thomas' Hospital, London, UK.ORCID https://orcid.org/0000-0001-5062-6851
C GillDepartment of Women and Children's Health, King's College London, St Thomas' Hospital, London, UK.
P T SeedDepartment of Women and Children's Health, King's College London, St Thomas' Hospital, London, UK.
K BramhamDepartment of Women and Children's Health, King's College London, St Thomas' Hospital, London, UK.
L C ChappellDepartment of Women and Children's Health, King's College London, St Thomas' Hospital, London, UK.ORCID https://orcid.org/0000-0001-6219-3379
A H ShennanDepartment of Women and Children's Health, King's College London, St Thomas' Hospital, London, UK.
St Thomas' Hospital · GB

Funding

Department of Health HTA/15/59/06Department of Health RP-2014-05-019NIHRPerkin Elmer
6 · The paper itself

Abstract

objectiveTo compare the performance of three placental growth factor (PlGF)-based tests in predicting delivery within 14 days from testing in women with suspected preterm pre-eclampsia before 35 weeks' gestation.

methodsThis was a retrospective analysis of samples collected from three prospective pregnancy cohort studies. Participants were pregnant women with suspected preterm pre-eclampsia recruited in tertiary maternity units in the UK and Ireland. Samples were analyzed simultaneously according to the manufacturers' directions. The tests compared were the DELFIA Xpress PlGF 1-2-3 test, the Triage PlGF test and the Elecsys immunoassay soluble fms-like tyrosine kinase-1 (sFlt-1)/PlGF ratio. Areas under receiver-operating characteristics curves (AUCs) were compared. The main outcome measure was detection of a difference of 0.05 in AUC between tests for delivery within 14 days of testing.

resultsPlasma samples from 396 women and serum samples from 244 women were assayed. In predicting delivery within 14 days secondary to suspected pre-eclampsia prior to 35 weeks' gestation, no significant differences were observed in AUCs (P = 0.795), sensitivities (P = 0.249), positive predictive values (P = 0.765) or negative predictive values (P = 0.920) between the three tests. The specificity of the Elecsys sFlt-1/PlGF ratio test was higher than that of the other two tests (P < 0.001).

conclusionsThe tests perform similarly in their prediction of need for delivery within 14 days in women with suspected pre-eclampsia. The high negative predictive values support the role of PlGF-based tests as 'rule-out' tests for pre-eclampsia. © 2018 Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.

Indexed as

Prenatal DiagnosisAdultBiomarkersCohort StudiesFemaleGestational AgeHumansPlacenta Growth FactorPredictive Value of TestsPre-EclampsiaPregnancyPregnancy Trimester, ThirdProspective StudiesRetrospective StudiesBiomarkersPlacenta Growth FactorDELFIA Xpress PlGF 1-2-3 test (Perkin Elmer)Elecsys immunoassay sFlt-1/PlGF ratio (Roche)placental growth factorpre-eclampsiasoluble Flt-1Triage PlGF (Alere)

Identifiers

PMID29575304
PMCPMC6588004
OpenAlexW2906320430

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.