Portuguese Authorship in Published Clinical Trials: Differences in Industry and Investigator Initiated Trials

Authors

  • Maria Pinheiro Andrade Faculty of Pharmacy. University of Lisboa. Lisboa.
  • Daniela Matias Faculty of Pharmacy. University of Lisboa. Lisboa.
  • Joana Batuca Portuguese Clinical Research Infrastructure Network. NOVA Medical School. Lisboa. European Clinical Research Infrastructure Network. Paris. France. iNOVA4Health / Chronic Diseases Research Center (CEDOC). Faculdade de Ciências Médicas | Nova Medical School. Universidade NOVA de Lisboa. Lisboa. https://orcid.org/0000-0002-0804-6279
  • Nélia Gouveia Comprehensive Health Research Center (CHRC) /Chronic Diseases Research Center (CEDOC). Faculdade de Ciências Médicas | Nova Medical School. Universidade NOVA de Lisboa. Lisboa. https://orcid.org/0000-0003-4977-0367
  • Hélder Mota-Filipe Faculty of Pharmacy. University of Lisboa. Lisboa. https://orcid.org/0000-0003-3045-2553
  • Emília Carreira Monteiro Portuguese Clinical Research Infrastructure Network. NOVA Medical School. Lisboa. iNOVA4Health / Chronic Diseases Research Center (CEDOC). Faculdade de Ciências Médicas | Nova Medical School. Universidade NOVA de Lisboa. Lisboa. https://orcid.org/0000-0002-0570-0765
  • Catarina Madeira Comprehensive Health Research Center (CHRC) /Chronic Diseases Research Center (CEDOC). Faculdade de Ciências Médicas | Nova Medical School. Universidade NOVA de Lisboa. Lisboa. https://orcid.org/0000-0002-5053-9421

DOI:

https://doi.org/10.20344/amp.14554

Keywords:

Authorship, Clinical Trials as Topic, Portugal, Publishing

Abstract

Introduction: The aim of this study was to investigate the Portuguese authorship in publications resulting from trials initiated by the industry or investigators and run in Portugal.
Material and Methods: Clinical trials with Portuguese institutions as sponsor or recruiting centers, and registered in four clinical trial registries, in the last 14 years, were assessed. Publications of completed trials, from both the initiative of the industry and investigatorswere screened and compared.
Results: The percentage of published trials initiated by industry and investigators was similar (28.0%). However, the percentage of completed investigator-initiated trials (43.6%) was lower when compared to industry trials (69.7%). There was a higher percentage of Portuguese authorship in published investigator-initiated trials when compared with industry-initiated trials (47.1% vs 8.5%, respectively). Moreover, industry-initiated trials with Portuguese authors were published in journals with lower journal impact factor when compared with those published without authorship of Portuguese investigators. Oncology was the therapeutic area with the highest number of clinical trial registrations and publications. However, in publications with Portuguese authors, industry Initiated trials mainly focused on neurology while investigator-initiated trials had a higher number of papers in the fields of gastroenterology and infection diseases. Published trials with Portuguese authorship, initiated by the industry or investigators, also targeted different populations and had different purposes. In both cases, no significant differences were observed in terms of the journal impact factor or in the alignment of the published randomized trials with the respective reporting guidelines.
Discussion: When compared with previous publications, this study showed an increasing trend in the number of clinical trials in Portugal, published within similar timeframes, after trial conclusion. Even though both industry and investigator trials are published within the standards for reporting trials, the low number of Portuguese authorships in industry publications might underline the need for invigorating these independent clinical trials in Portugal by capacitating and empowering national clinical research teams.
Conclusion: This study confirmed that even though all registered trials had the involvement of Portuguese institutions as a recruiting center, not all the published trials had Portuguese investigators as authors, mainly those initiated by the industry.

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Published

2021-11-02

How to Cite

1.
Pinheiro Andrade M, Matias D, Batuca J, Gouveia N, Mota-Filipe H, Carreira Monteiro E, Madeira C. Portuguese Authorship in Published Clinical Trials: Differences in Industry and Investigator Initiated Trials. Acta Med Port [Internet]. 2021 Nov. 2 [cited 2022 Nov. 30];34(11):733-40. Available from: https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/14554

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