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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.

Study phase

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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 801-810 of 2188 for surgery

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  1. Studies on the Health Benefits of Pulsed Electromagnetic Field Therapy using Bioboosti

    Scottsdale/Phoenix, AZ

  2. Minimally Invasive Groin Dissection for Melanoma

    Scottsdale/Phoenix, AZ, Jacksonville, FL, Rochester, MN

  3. The Relationship Between Age and Carpal Tunnel Size

    Jacksonville, FL

  4. A Phase 2, Multicenter, Randomized Study of AP26113

    Rochester, MN

  5. Epsilon Aminocaproic Acid (EACA) for the Reduction of Blood Loss in Total Hip Arthroplasty (THA)

    Scottsdale/Phoenix, AZ, Jacksonville, FL

  6. Atezolizumab Immunotherapy in Patients With Advanced NSCLC (AJCC 7th Edition)

  7. A Study Comparing X-396 (Ensartinib) to Crizotinib in Patients with ALK Positive Non-Small Cell Lung Cancer

    Scottsdale/Phoenix, AZ

  8. Caregiver Monitoring of Children with Congenital Heart Disease

    Rochester, MN

  9. A Study of Rovalpituzumab Tesirine as Maintenance Therapy Following First-Line Platinum-Based Chemotherapy in Participants With Extensive Stage Small Cell Lung Cancer (MERU)

    Rochester, MN

  10. The Effect of Spatz3 Adjustable Balloon System Plus Diet and Exercise on Gastric Electrical Activity and Emptying

    Rochester, MN

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