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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 1-10 of 10 for Bariatric surgery

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  • Study status: Open/Status Unknown
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  1. Transforming Non-Invasive Liver Disease Detection by Magnetic Resonance Elastography

    Rochester, MN

  2. Bariatric Surgery Versus Diet Alone in the Bile Acid Pathway and Weight Loss

    Rochester, MN

  3. A Study of the Effect of Probiotic Supplements on Weight Loss, and the Connection it has to the Bacterial Environment of the Digestive System after Bariatric Surgery

    Rochester, MN

  4. A Study to Evaluate Increased Prevalence of Esophageal Motility Disorders Following Bariatric Surgery

    Rochester, MN

  5. Intragastric Balloon in Obese Adolescents With Comorbidities

    Rochester, MN

  6. Effect of GLP-1 Receptor Agonism After Sleeve Gastrectomy

    Rochester, MN

  7. Investigating the Link Between Type 2 Immunity and NAFLD in Human Obesity- AIM 2

    Scottsdale/Phoenix, AZ

  8. Study to Evaluate Gastric Emptying and Accommodation in Bariatric Surgery Patients by Establishing and Validating a New Protocol and Normative Values

    Rochester, MN

  9. A Study to Evaluate the Effectiveness of a Healthy Living Weight Loss Program in Obese Patients Undergoing Bariatric Endoscopy on Weight Loss Outcomes

    Rochester, MN

  10. A Study to Evaluate the Effect of POSE2 on Long-term Gastric Motor Function

    Rochester, MN


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