Evidence map›Paper›PMID 30545982›Full record

SynthesisJournal of the American Society of Nephrology : JASN2019

Quantity and Reporting Quality of Kidney Research.

Markos Kyriakos Tomidis Chatzimanouil, Louise Wilkens, Hans-Joachim Anders

Abstract readSystematic Review
In one paragraph

Synthesis in Journal of the American Society of Nephrology : JASN, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 2 pooled it
–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

33 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  6. The Role of Analysis Populations and Estimands in Clinical Trials.Journal of the American Society of Nephrology : JASN · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Markos Kyriakos Tomidis ChatzimanouilDivision of Nephrology, Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Ludwig Maximilians University München, Munich, Germany.
Louise WilkensDivision of Nephrology, Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Ludwig Maximilians University München, Munich, Germany.
Hans-Joachim AndersDivision of Nephrology, Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Ludwig Maximilians University München, Munich, Germany hjanders@med.uni-muenchen.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn 2004, researchers reported that the number of nephrology clinical trials was low and that the reporting quality of such trials was suboptimal. Furthermore, the number or quality of preclinical kidney-related studies has not been systematically evaluated.

methodsWe performed a systematic review of randomized clinical trials published in 1966-2017 (listed in the Cochrane Library) and preclinical studies published in 1945-2017 (listed in PubMed). For reporting quality analysis, we evaluated the final main paper of 118 clinical trial reports and 135 preclinical studies published in leading journals in 1996, 2006, and 2016 on the basis of criteria from the widely used CONSORT and ARRIVE guidelines.

resultsThe annual number of reports of clinical kidney-related trials more than doubled between 2004 and 2014 along with reports in other medical disciplines. Hypertension remains the dominant focus of study, but ongoing trials also center on CKD, ESRD, and AKI. The reporting quality analysis revealed improvements, but deficits in reporting of clinical trial design, mode of randomization, and intention-to-treat analysis remain. Annual numbers of kidney-related preclinical studies remained low between 1945 and 2017 compared with other disciplines. Reporting quality analysis of preclinical studies revealed substantial reporting deficits across all leading journals, with little improvement over the last 20 years, especially for group size calculations, defining primary versus secondary outcomes, and blinded analysis.

conclusionsNephrology studies keep increasing in number but still lag behind other medical disciplines, and the quality of data reporting in kidney research can be further improved.

Indexed as

NephrologyRandomized Controlled Trials as TopicAnimalsBiomedical ResearchDisease Models, AnimalEvaluation Studies as TopicFemaleHumansKidney DiseasesMaleNeeds AssessmentQuality ControlResearch DesignUnited Statesclinical trialkidneykidney disease

Identifiers

PMID30545982
PMCPMC6317598

What OpenQuestion holds

Textmetadata
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.