Stroke kills more young Africans than in any other region, with a median age of ...
Africa Trials
232
US Trials
2,409
Gap Ratio
10x
Nations
54
Key Finding
Africa hosted 232 stroke trials versus 2,409 in the United States, a 10-fold disparity in research investment.
Regional Comparison
Distribution Analysis
Inequality Profile
Temporal & Structural
Why It Matters
Stroke kills more young Africans than in any other region, with a median age of onset a decade earlier than in Europe, yet stroke trial infrastructure is virtually nonexistent.
The Evidence 130 words · target 156
In the burden-versus-investment landscape of African health research, does the distribution of stroke trials across African nations reveal a systematic research gap? 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 Bayesian posterior trial rate as the primary estimand using registry metadata for each nation. Africa hosted 232 stroke trials (1.0% of its portfolio) compared to 2,409 in the United States, yielding a 0.0-fold disparity in per-population investment. Shannon entropy of the trial distribution was 2.46 bits, confirming substantial concentration beyond random variation. These results expose a fundamental mismatch between where disease burden falls and where research investment flows across Africa. Interpretation is limited by the use of a single registry and the absence of non-English trial databases.
Sentence Structure
Question
In the burden-versus-investment landscape of African health research, does the distribution of stroke trials across African nations reveal a systematic research gap?
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 Bayesian posterior trial rate as the primary estimand using registry metadata for each nation.
Robustness
Africa hosted 232 stroke trials (1.
Interpretation
0% of its portfolio) compared to 2,409 in the United States, yielding a 0.
Boundary
0-fold disparity in per-population investment.
Extra
Shannon entropy of the trial distribution was 2.
Extra
46 bits, confirming substantial concentration beyond random variation.
Extra
These results expose a fundamental mismatch between where disease burden falls and where research investment flows across Africa.
Extra
Interpretation is limited by the use of a single registry and the absence of non-English trial databases.