Changes in resources, length and participation of U.S. clinical trials between 1999 and 2005

This statistic shows the changes in the resources, length and participation of clinical trials in the United States between 1999 and 2005. In 1999, a clinical trial lasted 460 days, whereas in 2005, a clinical trial lasted 780 days.

Exclusive Premium statistic

You need a Premium membership to access this statistic.
Advantages of our Premium Account:

  • Immediate access to our full Premium database
  • Save time! Easy to include in your presentations
  • Credible data! Over 18,000 data sources

With Statista, you get straight to the point: analyzing data, rather than searching for it.

Dr. Antonella Mei-Pochtler about Statista
Premium Account
Instant access
to all statistics
Download as XLS, PNG
and PDF
$49 per month*
(billed annually)
Issue19992005
Procedures per trial protocol (median)
(e.g. bloodwork, routine exams, x-rays, etc.)
- -
Clinical trial staff work burden
(in work-effort units)
- -
Length of clinical trial (days) - -
Clinical trial-participant enrollment rate
(% of volunteers meeting trial criteria)
- -
Clinical trial-participant retention rate
(% of participants completing trial)
- -
Source information for logged in users only.
Show our solutions
You may also be interested in...
Show more
Market Analytics
Recent Statistics
Recommended studies and dossiers

Find the proper statistic fast and easy: