Evidence map›Paper›PMID 38735122›Full record

ArticleEuropean journal of obstetrics, gynecology, and reproductive biology2024

Data integrity of 14 randomised controlled trials.

Ben W Mol, Esmee M Bordewijk, Ewelina Rogozińska, Lyle C Gurrin, Jim G Thornton, Madelon van Wely

Abstract read
In one paragraph

Article in European journal of obstetrics, gynecology, and reproductive biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Article
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.

Ben W MolDepartment of Obstetrics and Gynecology, Monash University, Clayton, Australia. Electronic address: ben.mol@monash.edu.
Esmee M BordewijkDepartment of Obstetrics and Gynecology, Monash University, Clayton, Australia; Centre for Reproductive Medicine, Amsterdam UMC, Amsterdam, the Netherlands.
Ewelina RogozińskaMeta-Analysis Group, Institute of Clinical Trials and Methodology, MRC Clinical Trials Unit at UCL, London, England, United Kingdom.
Lyle C GurrinCentre for Epidemiology and Biostatistics, School of Population and Global Health, The University of Melbourne, Parkville, Australia.
Jim G ThorntonFaculty of Medicine & Health Sciences, University of Nottingham, Nottingham, United Kingdom.
Madelon van WelyCentre for Reproductive Medicine, Amsterdam UMC, Amsterdam, the Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA review of the literature on iron treatments for iron-deficient anaemia in pregnancy indicated duplication of baseline and outcome tables in two separate randomised controlled trials (RCTs) that share only a single author.

aimTo assess the integrity of randomised clinical trials from Dr A.M. Darwish, Assiut University, Egypt.

designAssessment of Research Integrity.

methodsWe tabulated the characteristics of studies, compared baseline and outcome tables between articles and looked for implausible findings. We used the distribution of baseline p-values to assess whether the summary statistics of baseline characteristics were consistent with properly conducted randomisation.

resultsWe identified 14 RCTs (1,405 participants) published between October 2004 and September 2019. Two pairs of studies showed considerable similarities in baseline characteristics, while another pair of studies was plagiarized. The analysis of baseline p-values indicated a low probability that all the studies featured randomised treatment allocation.

conclusionOur analysis of the RCTs of Dr Darwish suggests possible integrity problems. We recommend a critical investigation of the studies that have not been retracted. Until that has been completed, these studies should not be used to inform clinical practice.

Indexed as

Anemia, Iron-DeficiencyRandomized Controlled Trials as TopicData AccuracyFemaleHumansPregnancyPregnancy Complications, Hematologic

Identifiers

PMID38735122
PMCPMC7616354

What OpenQuestion holds

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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.