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Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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Biomarkers.

Catherine E A Scipion1, Karen E Nielsen1, Jalayne J Arias1

  • 1School of Public Health - Georgia State University, Atlanta, GA, USA.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 26, 2025
PubMed
Summary
This summary is machine-generated.

International collaboration in Alzheimer's Disease/Alzheimer's Disease Related Dementias (AD/ADRD) research boosts data sharing but shows disparities in researcher demographics and negative outcomes. Further research is needed to understand these patterns and promote equity.

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Area of Science:

  • Neuroscience
  • Public Health
  • Data Science

Background:

  • International collaborations enhance AD/ADRD research through data sharing, improving reproducibility and knowledge exchange.
  • Understanding the characteristics and data-sharing practices of AD/ADRD researchers involved in international collaborations is crucial for optimizing global research efforts.
  • This study aims to characterize AD/ADRD researchers with and without international collaborators, focusing on their data-sharing practices and experiences.

Purpose of the Study:

  • To compare the demographics, research experience, and data-sharing practices of AD/ADRD researchers with and without international collaborators.
  • To examine the influence of international collaboration on data-sharing experiences and outcomes within the AD/ADRD research community.

Main Methods:

  • A cross-sectional survey (NIH-1R01AG080093-01) collected self-reported data on data-sharing practices and experiences.
  • Chi-squared tests with Benjamini-Hochberg correction were used to compare demographics, data-sharing practices, and experiences between researchers with and without international collaborators (α < 0.05).

Main Results:

  • Of 585 respondents, 193 (33%) had international collaborators. These researchers were more likely to be male, White, have longer research experience, be ADRC investigators, and have higher publication rates.
  • International collaborators were more likely to analyze/generate data outside the U.S. and engage in formal data sharing (making and receiving requests).
  • Despite increased data sharing activity, researchers with international collaborations reported more negative data-sharing outcomes (43.8% vs. 20.3%).

Conclusions:

  • International collaboration is linked to increased data sharing in AD/ADRD research but is associated with demographic disparities and a higher likelihood of negative data-sharing experiences.
  • Further investigation is needed to elucidate the mechanisms connecting international collaboration, data-sharing practices, and research equity in AD/ADRD.
  • Addressing disparities in researcher representation and negative data-sharing outcomes is essential for maximizing the benefits of global research partnerships.