Completed

NCT Number: NCT07115680

Where Did the Authors Work When They Conducted Their Clinical Pharmacology Studies?

It is unknown in which countries the clinical pharmacology studies published in leading specialized journals were conducted. The hypothesis is that studies in this specialty tend to be conducted and published by authors from a single country. This analysis aims to describe the number of collaborators and the countries in which they worked, using the Nature Index concept of "share."

Completed

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Key information

Conditions

Scientific Collaboration in Clinical Pharmacology

Sex eligibility

All sexes

Study type

Observational

Primary location

Health Research Institute Fundación Jiménez Díaz

Madrid, 28036, Spain

About this study

Original articles (full reports, short communications, research letters) on human participants, data, or material published in the seven top (as per Journal Citations Report 2024 Impact Factor) clinical pharmacology hybrid journals linked to clinical pharmacology professional societies will be included. Articles of interest to be included from the June 2025 issue backwards until reaching 100 articles or until the January 2024 issue, whichever comes first. The country of the main authors (first author/last author) and the countries where all the contributors listed in the article's byline worked will be recorded. Collaboration index and degree of collaboration will be calculated. The contribution of all countries will be calculated using the Nature index's "share" concept.Depending on whether a high percentage of articles are written by authors from the same country as a given journal (and scientific society), the need to adjust the results to reflect a situation closer to reality in terms of the importance of different countries in the publication of the articles evaluated will be assessed. As a proxy, the relevance of each country in contributing to clinical pharmacology research will be calculated by multiplying the "share" score by the JCR impact factor of each journal and adding the scores obtained from the seven journals. In addition, In addition, following slightly modified terminology used by ClinicalTrials.gov, the type of sector (industry, government institutions, and 'Others') will also be recorded to help characterize the studies evaluated. However, the 'Others' category will be classified into hospitals, universities, and research centers. Funding will be recorded as public, private, and public-private.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Articles on human participants, data or material. Original articles, short reports, research letters.

Exclusion criteria

In vitro studies, animal studies. Editorials, letters, commentaries, perspectives.

Treatment and study plan

human participants, data or material

Other

Articles on human participants, data, or material published in top (as per JCR IF) clinical pharmacology journals linked to professional societies

Primary outcomes

countries where authors conducted their study

Time frame: Articles of interest to be included from the June 2025 issue backwards until reaching 100 articles or until the January 2024 issue, whichever comes first

The country of the principal authors and of all collaborators will be registered following Nature Index 'share' concept

Sponsors and collaborators

Lead sponsor

Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz

Other

Registry information

Official study title

Countries Where the Main Authors and Their Collaborators of Recently Published Clinical Pharmacology Studies Worked

Important dates

Study start: 2025
Primary completion: 2025
Study completion: 2025
First posted: Aug 11, 2025
Registry last updated: Jul 31, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.