What are the different types of clinical trials?

There are many different types of clinical trials with each type serving a different purpose. According to the National Institutes of Health, these are the different types of clinical trials:

  • Natural history studies provide valuable information about how disease and health progress.

  • Prevention trials focus on finding out how to prevent a disease or disorder from occurring or recurring in patient populations. The prevention strategies studied may be based on medicines, vaccines, minerals, or on improving lifestyle habits.

  • Screening trials test the best way to detect certain diseases or health conditions

  • Diagnostic trials look to improve the way diseases are diagnosed, using new procedures or tests.

  • Treatment trials look at the benefit and hazards of new drugs or interventions.

  • Quality of Life trials seek to enhance the well-being or quality of life of patients with particular diseases or disorders.