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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 11-20 of 39 for psychiatry and psychology

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  • Study status: Open/Status Unknown
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  1. Adolescent Biomarker Guided rTMS

    Rochester, MN

  2. A Study to Evaluate Compensatory Training to Support Everyday Function and Adherence to Brain Healthy Lifestyle Changes in Those at Risk for Alzheimer's Disease

    Scottsdale/Phoenix, AZ

  3. A Study to Evaluate the Effectiveness of Psychological Support Based on Positive Suggestions on Mental Health Morbidity and Cognitive Function

    Rochester, MN

  4. Glasses for Adolescent Delayed Sleep-Wake Phase Disorder (GLAD)

    Rochester, MN

  5. A Study to Assess Accelerated Resolution Therapy for Cancer Related Trauma and Distress

    Jacksonville, FL, Rochester, MN

  6. Attitudes and Beliefs About Gene Transfer Therapy in Adults with Cocaine Use Disorder

    Rochester, MN

  7. A Study to Build Translational Science through an Online Social Media Community Partnership Among Minnesota Communities, the CTSA Community Engagement Programs at Mayo Clinic and the University of Minnesota

    Rochester, MN

  8. A Study to Evaluate the Use of a Daily Diary to Guide Patient Care in Patients at RIsk of Suicide

    Eau Claire, WI

  9. A Study Evaluating the Prevalence, Incidence and Predictors for Development of the Impulse Control Disorders in Patients with Prolactinomas Treated with Dopamine Agonist Therapy

    Rochester, MN, Jacksonville, FL

  10. Study of Potential VCA Candidates', Caregivers' and Providers' Motivations, Expectations and Shared Decision-making in VCA

    Rochester, MN

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