What questions should I ask my doctor about my role before participating in a trial? Part 1
• What will I have to do?•Will I have to stop taking any of my current medications or supplements to
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What questions should I ask my doctor or study coordinator before deciding to participate in a trial? part 3
•How do the possible risks, side effects and benefits of this trial compare with those of my current treatment plan?•
What questions should I ask my doctor or study coordinator before deciding to participate in a trial? part 2
• How will I know which intervention I receive during the trial? Will I know? Will members of the research
What questions should I ask myself before deciding to participate in a clinical trial?
• Why do I want to participate in the clinical trial?• What are my goals and expectations if I were
Observational Study
In an observational study, investigators assess health outcomes in groups of participants according to a protocol or research plan. Participants
Natural History Study
In a natural history study, investigators follow a group of people over time who have, or are at risk of
Phase 4 Clinical Trial
In phase 4 clinical trial, approved drugs are monitored over a period of time in phase 4 studies. Although these
Phase 3 Clinical Trial
Phase 3 clinical trial is “confirmatory” phase, the number of participants is increased and the experimental drug is tested against
Phase 2 Clinical Trial
Phase 2 studies are designed to assess whether an experimental treatment works. The trial may involve healthy volunteers or people
Phase 1 Clinical Trial
In phase 1 clinical trial, also called “safety studies,” researchers focus on whether an experimental treatment is safe while determining