Evidence map›Paper›PMID 42169159›Full record

ArticleResearch integrity and peer review2026

Who deserves credit, who receives credit? A cross-sectional survey on the handling of co-authorship in medical dissertations in Germany.

Laura Klempp, Nadin Zerin Tanriverdi, Adrian Loerbroks, Niklas Juth, Nils Hansson

Erratum issuedAbstract read
In one paragraph

Article in Research integrity and peer review, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. 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

5 · Who and what money

Authors and funding

5 authors.

Laura KlemppDepartment of the History, Philosophy and Ethics of Medicine, Centre for Health and Society, Medical Faculty, Heinrich-Heine-University, Moorenstraße 5, Duesseldorf, 40225, Germany.
Nadin Zerin TanriverdiInstitute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Medical Faculty, Heinrich-Heine-University Duesseldorf, Duesseldorf, Germany.
Adrian LoerbroksInstitute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Medical Faculty, Heinrich-Heine-University Duesseldorf, Duesseldorf, Germany.
Niklas JuthDepartment of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics, Uppsala University, Uppsala, Sweden.
Nils HanssonDepartment of the History, Philosophy and Ethics of Medicine, Centre for Health and Society, Medical Faculty, Heinrich-Heine-University, Moorenstraße 5, Duesseldorf, 40225, Germany. nils.hansson@hhu.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study investigates the awareness and application of the internationally recognized Vancouver guidelines on co-authorship among doctoral students in medicine across North Rhine-Westphalia (NRW), Germany, the federal state with the highest number of medical faculties (nine) nationwide. Although authorship practices have been widely discussed in medical research, empirical data on doctoral students' awareness of and adherence to these guidelines remain limited, particularly in Germany.

methodsWe carried out a cross-sectional online survey among 147 former doctoral students who completed their dissertations at a medical faculty during the last two years. Participants were recruited via mailing lists, social media, and doctoral graduation ceremonies between December 2024 and June 2025. Descriptive statistics were used to summarize the data. To examine further relationships, correlational analyses were conducted using chi-square tests.

resultsWhile 84% (n = 123/147) of the participants considered the Vancouver authorship guidelines important, 61% (n = 90/147) reported that at least one criterion of the Vancouver guidelines had not been fulfilled in their work. Furthermore, 56% (n = 82/147) reported never having received any information about the guidelines. Among doctoral students supervised by male supervisors (n = 103), female doctoral students had lower odds of receiving information about authorship guidelines (Odds Ratio [OR] = 0.37, 95% CI 0.17-0.83) and of reporting a clear policy regarding them (OR = 0.37, 95% CI 0.16-0.81) compared with male doctoral students.

conclusionOverall, our findings indicate that, among the surveyed cohort of former medical doctoral students in Germany, self-reported adherence to authorship guidelines was limited and observed gender-related differences. Variations in the perceived dissemination and implementation of ethical authorship practices were associated with the supervisory gender constellation. These results underscore the need for more robust institutional frameworks, systematic education on authorship ethics, and clearer accountability mechanisms in the supervision of doctoral research.

Indexed as

AuthorshipGender discriminationMentorshipResearch ethical guidelinesResearch ethics

Identifiers

PMID42169159
PMCPMC13195902

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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.