From Deseret News archives:

How it works ...

Published: Saturday, July 10, 2004 8:40 p.m. MDT
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There are different types of clinical trials:

• A treatment trial tests new treatments, such as a medication or a surgical technique.

• Prevention trials look for better ways to keep people from getting a specific disease.

• Diagnostic trials are used to find better tests or procedures to make a diagnosis.

• Screening trials test the best detection methods.

Quality-of-life trials are focused on comfort and life issues of those with a chronic condition.


Source: The National Institutes of Health.

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