# Methodological Quality Audit

In trial methodology, does Africa receive cutting-edge trial designs or second-class methodology in an era of adaptive and platform innovation? This audit classified 23,873 African trials by design sophistication using ClinicalTrials.gov keyword analysis for adaptive (140), cluster-randomised (452), platform (152), and Bayesian (20) designs through March 2026. The United States hosted 2,986 adaptive, 1,144 cluster, 1,385 platform, and 494 Bayesian trials respectively. Africa's design sophistication index was estimated at 0.12 versus 0.68 for the United States on a composite metric of advanced design adoption. Despite 452 cluster-randomised trials showing relative strength, Africa's 20 Bayesian designs and 140 adaptive trials indicate minimal adoption of the methodological frontier. These findings demonstrate that Africa receives methodologically inferior designs precisely where advanced methods would yield the greatest benefit for community-level health interventions. Interpretation is limited by keyword-based design classification which may undercount unlabelled advanced methodologies.

## References

1. Schwartz D, Lellouch J. "Explanatory and pragmatic attitudes in therapeutical trials." J Clin Epidemiol. 2009;62:499-505.
2. Alemayehu C, et al. "Behind the mask of the African clinical trials landscape." Trials. 2018;19:519.
3. ClinicalTrials.gov API v2 Documentation. U.S. National Library of Medicine.

## Note Block

- Type: research
- App: https://mahmood726-cyber.github.io/africa-e156-students/methods-systems/dashboards/design-quality.html
- Code: https://github.com/mahmood726-cyber/africa-e156-students/blob/master/methods-systems/code/design-quality.py
- Data: ClinicalTrials.gov API v2
- Date: 2026-04-05