CT.gov Completion-Delay Debt
2026-03-29 | full-registry ct.gov audit | plots, figures, and e156 bundle
Series
Delay Dashboard

Fast-cycle trials carry the heaviest reporting debt in older CT.gov cohorts

Submission-to-completion timing is a strong visibility gradient: studies completed in the same year they are first submitted are the quietest older bucket in the registry.

No results
Ghosts
Visible share
Purpose contrast

Dashboard

Delay buckets make the registry look less like one backlog and more like a timing-stratified reporting system.

How to read the dashboard
0-year no results
85.7%
Fast-cycle studies
0-year ghosts
54.1%
Neither visible
6-10-year no results
57.6%
Longer-cycle benchmark
6-10-year visible
24.7%
Results plus publication
No-results by delay
DELAY BUCKETS2-year no-results rate by submission-to-completion interval0 years85.7%1 year72.6%2-3 years66.0%4-5 years61.6%6-10 years57.6%11+ years48.0%
The fastest operational bucket is the worst reporting bucket in the series.
The main comparison is across delay buckets because it turns dates into a clear operational-timing signal.
Ghost protocols by delay
DELAY GHOSTSGhost-protocol rate by submission-to-completion interval0 years54.1%1 year43.9%2-3 years36.4%4-5 years31.5%6-10 years28.8%11+ years24.2%
Ghost protocols decline steadily as delay lengthens, suggesting fast-cycle studies are not simply publishing elsewhere.
The ghost metric keeps the focus on total visible absence rather than missing results alone.
Purpose contrast
PURPOSE WITHIN DELAYSelected purpose contrasts inside the delay gradientTreatment | 084.2%Treatment | 6-1053.8%NA | 088.7%NA | 6-1083.6%
Treatment studies improve sharply as delay lengthens, while unlabeled-purpose studies stay poor even with longer lag.
This keeps the delay page tied to design structure rather than leaving it as a pure date story.
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
CT.gov Industry Disclosure Gap

Industry-focused missing-results stock, sponsor backlogs, and structural sparsity inside CT.gov.

Sponsor Classes
CT.gov Sponsor-Class Hiddenness

Sponsor-class comparisons on rate, stock, and structural hiddenness rather than one flattened ranking.

Phases
CT.gov Phase Reporting Gap

Phase-by-phase disclosure gaps showing how silence changes along the development pathway.

Structural
CT.gov Structural Missingness

Field-level missingness across publication links, IPD statements, descriptions, and locations.

Visibility
CT.gov Evidence Visibility Gap

Results-plus-publication visibility states showing how many older trials are fully visible, partly visible, or ghosted.

Cohorts
CT.gov Completion Cohort Debt

Completion-era reporting debt showing how older eligible cohorts drift on no-results and ghost-protocol rates.

Conditions
CT.gov Condition Hiddenness Map

Keyword-classified therapeutic-area hiddenness mapping across common condition families.

Concentration
CT.gov Sponsor Backlog Concentration

Concentration and inequality analysis showing how much unresolved stock sits inside a thin sponsor slice.

Rule Eras
CT.gov Rule-Era Reporting Gap

Policy-era comparisons across pre-FDAAA, FDAAA, and later CT.gov completion cohorts.

PubMed Audit
CT.gov Publication Undercount Audit

Sample-based external PubMed NCT audit testing how often CT.gov no-link records hide an external paper trail.

Oncology
CT.gov Oncology Hiddenness

Oncology-specific CT.gov hiddenness showing where cancer-trial stock, phases, and sponsors still go quiet.

Cardiovascular
CT.gov Cardiovascular Hiddenness

Cardiovascular CT.gov hiddenness showing how heart and vascular studies remain quiet across major phases and sponsors.

Metabolic
CT.gov Metabolic Hiddenness

Metabolic CT.gov hiddenness across obesity, diabetes, and related trial portfolios with large late-phase and NA stock.

Size
CT.gov Enrollment-Size Gap

Enrollment-size gradients showing how older small trials remain much quieter than larger registered studies.

Geography
CT.gov Geography-Scale Visibility

Site and country footprint analysis showing how larger trial geographies map onto much better public visibility.

Purpose
CT.gov Design-Purpose Hiddenness

Primary-purpose and allocation analysis showing which trial intents remain most obscured on CT.gov.

Architecture
CT.gov Trial-Architecture Gap

Arm-count and intervention-count analysis showing simpler trial architectures are often the quietest.