CT.gov Black-Box Trials
2026-03-29 | full-registry ct.gov audit | plots, figures, and e156 bundle
Series
Black-Box Dashboard

Black-box trials isolate the registry's deepest public silence state

OTHER dominates black-box stock on count, INDUSTRY has the highest large-class black-box rate, the United States remains the largest country-linked stock, and healthy-volunteer portfolios are the sharpest condition-family extreme.

Stock
Rates
Countries
Conditions

Dashboard

OTHER dominates black-box stock, INDUSTRY leads on large-class black-box rate, the United States still carries the biggest national stock, and healthy volunteers are the sharpest condition-family extreme.

How to read the dashboard
OTHER stock
21,375
Black-box studies
Industry rate
23.4%
Large-class rate
US stock
12,183
Country-linked stock
Healthy rate
33.9%
Condition-family rate
Sponsor-class black-box stock
BLACK-BOX STOCKBlack-box studies by sponsor classOTHER21,375INDUSTRY17,718OTHER_GOV570NETWORK221FED161NIH59INDIV29UNKNOWN2AMBIG1
OTHER and INDUSTRY dominate the stock table together, but they mean different things on rate.
OTHER reflects broad heterogeneous volume; INDUSTRY reflects a sharper large-class rate problem.
Country-linked black-box stock
COUNTRY BLACK BOXESCountry-linked black-box study countsUnited States12,183France3,093Germany2,298Canada2,007United Kingdom1,987China1,977South Korea1,778Spain1,434Belgium1,282Italy1,038
The United States holds the largest absolute black-box stock, with France, Germany, Canada, and China also prominent.
Absolute stock remains heavily concentrated in large CT.gov portfolios.
Condition-family black-box rate
CONDITION BLACK-BOX RATESBlack-box rate across condition familiesHealthy volunteers33.9%Gastrointestinal and hepatic17.7%Immunology and dermatology17.6%Renal and urology17.4%Metabolic16.9%Other16.6%Respiratory and sleep15.9%Musculoskeletal and pain15.8%Neurology15.1%Cardiovascular15.0%
Healthy volunteers are the clearest condition-family extreme, far above the main disease portfolios.
That makes black-box silence look different from ordinary disease-backlog stories.
Read Across Projects

Across The Series

Each project isolates a different dimension of registry opacity, but the point is the contrast between them, not a single leaderboard.

Industry
Industry project

Industry project from the CT.gov hiddenness series.

Sponsor-Class
Sponsor-class project

Sponsor-class project from the CT.gov hiddenness series.

Phase
Phase project

Phase project from the CT.gov hiddenness series.

Structural Missingness
Structural missingness project

Structural missingness project from the CT.gov hiddenness series.

Evidence Visibility
Evidence visibility project

Evidence visibility project from the CT.gov hiddenness series.

Completion Cohort
Completion cohort project

Completion cohort project from the CT.gov hiddenness series.

Condition Hiddenness
Condition hiddenness project

Condition hiddenness project from the CT.gov hiddenness series.

Sponsor Concentration
Sponsor concentration project

Sponsor concentration project from the CT.gov hiddenness series.

Rule-Era Reporting
Rule-era reporting project

Rule-era reporting project from the CT.gov hiddenness series.

Publication Undercount
Publication undercount audit

Publication undercount audit from the CT.gov hiddenness series.

Oncology Hiddenness
Oncology hiddenness project

Oncology hiddenness project from the CT.gov hiddenness series.

Cardiovascular Hiddenness
Cardiovascular hiddenness project

Cardiovascular hiddenness project from the CT.gov hiddenness series.

Metabolic Hiddenness
Metabolic hiddenness project

Metabolic hiddenness project from the CT.gov hiddenness series.

Enrollment-Size
Enrollment-size project

Enrollment-size project from the CT.gov hiddenness series.

Geography-Scale
Geography-scale project

Geography-scale project from the CT.gov hiddenness series.

Design-Purpose
Design-purpose project

Design-purpose project from the CT.gov hiddenness series.

Completion-Delay
Completion-delay project

Completion-delay project from the CT.gov hiddenness series.

Trial-Architecture
Trial-architecture project

Trial-architecture project from the CT.gov hiddenness series.

Intervention-Type
Intervention-type project

Intervention-type project from the CT.gov hiddenness series.

Country Reporting
Country reporting project

Country reporting project from the CT.gov hiddenness series.

Stopped-Trial
Stopped-trial project

Stopped-trial project from the CT.gov hiddenness series.

Outcome-Density
Outcome-density project

Outcome-density project from the CT.gov hiddenness series.

Actual-Field
Actual-field project

Actual-field project from the CT.gov hiddenness series.

Us-Versus-Global
US-versus-global project

US-versus-global project from the CT.gov hiddenness series.

Modality-Sponsor
Modality-sponsor project

Modality-sponsor project from the CT.gov hiddenness series.

Country-Condition
Country-condition project

Country-condition project from the CT.gov hiddenness series.

Disease-Geography
Disease-geography project

Disease-geography project from the CT.gov hiddenness series.

Condition-Sponsor
Condition-sponsor project

Condition-sponsor project from the CT.gov hiddenness series.

Country-Sponsor
Country-sponsor project

Country-sponsor project from the CT.gov hiddenness series.

Us-Versus-Ex-Us
US-versus-ex-US project

US-versus-ex-US project from the CT.gov hiddenness series.

Industry-Family
Industry-family project

Industry-family project from the CT.gov hiddenness series.

Risk-Adjusted Hiddenness
Risk-adjusted hiddenness

Risk-adjusted hiddenness from the CT.gov hiddenness series.

Overdue Results Clock
Overdue results clock

Overdue results clock from the CT.gov hiddenness series.

Publication Index Gap
Publication index gap

Publication index gap from the CT.gov hiddenness series.

Probable Act/Fdaaa Debt
Probable ACT/FDAAA debt

Probable ACT/FDAAA debt from the CT.gov hiddenness series.

Sponsor Watchlist
CT.gov Sponsor Excess Watchlist

Sponsor-level adjusted watchlist showing which named sponsors still carry the largest excess hiddenness stock.

Country Watchlist
CT.gov Country Excess Watchlist

Country-linked adjusted watchlist showing which national portfolios remain worse than expected after visible study mix is held more constant.

Condition Watchlist
CT.gov Condition Excess Watchlist

Condition-family watchlist showing which therapeutic areas still carry excess no-results and ghost-protocol stock.

Strict Repeaters
CT.gov Strict-Proxy Repeaters

Strict U.S.-nexus repeater tables showing which sponsors and classes dominate the regulated-looking backlog.