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A volunteer subject with no known significant health problems who participates in research to test a new drug, device or intervention. These volunteers are recruited to serve as controls for patient groups. Healthy volunteers receive the same test, procedure, or drug the patient group receives.

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During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

Search Results 21-30 of 38 for psychiatry and psychology

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  • Study status: Open/Status Unknown
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  1. Patterns of Co-use of Nicotine and Cannabis Electronic Cigarettes, and Its Association with Perceived Social Support in Young Adults

    Eau Claire, WI

  2. A Study Using Virtual Reality to Reduce Intra-procedural Anxiety and Sedation Needs During Procedures with No or Minimal Sedation

    Rochester, MN

  3. A Study to Evaluate the Prevalence and Impact of Eating Disorders Among Patients with Inflammatory Bowel Disease

    Jacksonville, FL

  4. Pediatric Pain Rehabilitation Program

    Rochester, MN

  5. A Study of Mood Symptoms in Epilepsy Patients

    Rochester, MN

  6. Advanced Care Planning in Dementia

    Jacksonville, FL

  7. A Study to Evaluate a Primary Care-Based Intervention for Adolescent Restrictive Eating Disorders

    Rochester, MN

  8. A Study of Dihydropyrimidine Dehydrogenase Function in Neural Development and Function

    Rochester, MN

  9. Acamprosate Treatment Outcome

    Rochester, MN, Albert Lea, MN

  10. Neuropsychological and Behavioral Testing in Young Patients with Cancer

    Rochester, MN

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