Mahmood Ahmad
Tahir Heart Institute
author@example.com

Protocol: CT.gov Sponsor Backlog Concentration

This protocol ranks lead sponsors by the volume of eligible older studies missing posted results. Primary outputs estimate the share of the backlog held by the top 1 percent, top 5 percent, top 10 percent, and selected named sponsor slices, alongside the sponsor-level Gini coefficient. Secondary outputs identify the largest named sponsors on both missing-results stock and ghost-protocol stock. The project is designed to make concentration legible without collapsing different sponsor classes into a single blame category.

Outside Notes

Type: protocol
Primary estimand: Share of the 2-year missing-results backlog held by top sponsor slices
App: CT.gov Sponsor Backlog Concentration dashboard
Code: https://github.com/mahmood726-cyber/ctgov-sponsor-backlog-concentration
Date: 2026-03-29
Validation: FULL REGISTRY RUN

References

1. ClinicalTrials.gov API v2. National Library of Medicine. Accessed March 29, 2026.
2. Page MJ, McKenzie JE, Bossuyt PM, et al. The PRISMA 2020 statement. BMJ. 2021;372:n71.
3. Borenstein M, Hedges LV, Higgins JPT, Rothstein HR. Introduction to Meta-Analysis. 2nd ed. Wiley; 2021.

AI Disclosure

This work represents a compiler-generated evidence micro-publication built from structured registry data and deterministic summary code. AI was used as a constrained coding and drafting assistant for interface generation, packaging, and prose refinement, not as an autonomous author. The analytical choices, interpretation, and final outputs were reviewed by the author, who takes responsibility for the content.