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Participating in Clinical Trials

Frequently Asked Questions

2. What are the different types of clinical trials?

There are five different types of clinical trials.

  • Treatment trials
  • Screening trials
  • Diagnostic trials
  • Prevention trials
  • Quality of life trials
 
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Last reviewed: 24 December 2009
First published: 03 January 2008

National Institute on Aging, U.S. National Library of Medicine
National Institutes of Health, U.S. Department of Health & Human Services
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