Abstract
Background: Inequities in global clinical research may influence participant compensation and ethical standards in low-resource settings
Methods: A cross-sectional analysis of 23,873 interventional trials conducted in Africa and 190,644 in the United States was performed using ClinicalTrials.gov data up to April 2026. Inequality in trial distribution across African countries was assessed using the Gini coefficient with bootstrap resampling for stability.
Results: Clinical trials were highly concentrated in a small number of African countries (Gini = 0.732). Sensitivity and bootstrap analyses confirmed the robustness of this estimate
Conclusion: The unequal distribution of trials reflects structural disparities in research investment and governance, which may limit regional autonomy in evidence generation and raise ethical concerns regarding participant engagement and compensation.
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