Evidence

Results reporting rates · publication lag · evidence gaps

Completed With Results

60K

Posted on ClinicalTrials.gov

Results Rate

24%

Of completed trials

Phase 3 Results Rate

44%

Pivotal trials with posted data

Typical Lag

1–2 years

Completion → results posted

Results by Phase

Completed trials: with vs. without results posted (stacked)

Annual Results Submissions

Results posted to ClinicalTrials.gov per year since 2008

Time to Results Submission

Days from primary completion date to first results posted

Results Rate by Sponsor Type

% of completed trials with posted results, by lead sponsor class

Evidence Gap

188K

Completed trials with no results posted

FDAAA 801 Mandate

12 months

Legal deadline to post results after primary completion

Phase 3 Gap

14K

Pivotal trials with no posted primary outcome data

Publication Search

Search PubMed for clinical trial publications by drug name, condition, NCT ID, or author.