Congenital Heart Defect — Automated Fetal Cardiac Function in Babies Affected by Heart Diseases
Citation(s)
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Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
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Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.