The African Union recognizes 8 Regional Economic Communities, but their research...
Africa Trials
3,515
US Trials
159,433
Gap Ratio
45x
Nations
54
Key Finding
Africa hosts 23,873 trials across 54 nations with extreme geographic concentration.
Regional Comparison
Distribution Analysis
Inequality Profile
Temporal & Structural
Why It Matters
The African Union recognizes 8 Regional Economic Communities, but their research productivity varies enormously — from SADC's strong South African anchor to ECCAS's near-total research void.
The Evidence 131 words · target 156
In the spatial mapping of African clinical research, does the pattern of au regional economic community gaps reveal structural inequity in African research investment? This cross-sectional audit evaluated 23,873 African and 190,644 United States interventional trials registered on ClinicalTrials.gov through April 2026. Investigators computed the chi-squared test of distributional uniformity as the primary estimand using registry metadata for each nation. Africa registered 3,515 relevant trials compared to 159,433 in the United States, revealing an 45-fold absolute gap in research volume. Shannon entropy of the trial distribution was 2.46 bits, confirming substantial concentration beyond random variation. These findings reveal a geographic research monopoly where most African nations remain functionally invisible in the clinical evidence landscape. Interpretation is limited by the use of a single registry and the absence of non-English trial databases.
Sentence Structure
Question
In the spatial mapping of African clinical research, does the pattern of au regional economic community gaps reveal structural inequity in African research investment?
Dataset
This cross-sectional audit evaluated 23,873 African and 190,644 United States interventional trials registered on ClinicalTrials.
Method
gov through April 2026.
Primary Result
Investigators computed the chi-squared test of distributional uniformity as the primary estimand using registry metadata for each nation.
Robustness
Africa registered 3,515 relevant trials compared to 159,433 in the United States, revealing an 45-fold absolute gap in research volume.
Interpretation
Shannon entropy of the trial distribution was 2.
Boundary
46 bits, confirming substantial concentration beyond random variation.
Extra
These findings reveal a geographic research monopoly where most African nations remain functionally invisible in the clinical evidence landscape.
Extra
Interpretation is limited by the use of a single registry and the absence of non-English trial databases.