Intervention Studies – Randomized Controlled Trials Advantages and Disadvantages
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Questions and Answers

What is the primary advantage of randomized controlled trials?

  • Improved control over exposure (correct)
  • Reduced compliance issues
  • Lower cost and better feasibility
  • Higher ethical standards
  • What is a major disadvantage of randomized controlled trials?

  • High cost and difficult feasibility (correct)
  • Low compliance issues
  • Reduced ethical concerns
  • Easy feasibility
  • What does it mean when a randomized controlled trial is referred to as 'double-blinded'?

  • Both the participant and the investigator are informed about who receives the treatment or procedure
  • Only the investigator is not informed about who receives the treatment or procedure
  • Both the participant and the investigator are not informed about who receives the treatment or procedure (correct)
  • Only the participant is not informed about who receives the treatment or procedure
  • What is the purpose of blinding in randomized controlled trials?

    <p>To prevent bias in analyzing results and outcomes</p> Signup and view all the answers

    What is the primary purpose of meta-analysis?

    <p>To synthesize the literature on a particular topic</p> Signup and view all the answers

    What determines the strength of a meta-analysis?

    <p>The number of studies it relies upon</p> Signup and view all the answers

    What ethical issue is associated with randomized controlled trials?

    <p>Lack of equipoise</p> Signup and view all the answers

    What minimizes observation bias in randomized controlled trials?

    <p>Randomization</p> Signup and view all the answers

    What is the role of an institutional review board?

    <p>To review and approve, amend, or terminate research</p> Signup and view all the answers

    Which requirement ensures that communities and individuals are selected based on scientific objectives?

    <p>Fair subject selection</p> Signup and view all the answers

    What is the purpose of informed consent in clinical research studies?

    <p>To inform individuals about the research and obtain their voluntary consent</p> Signup and view all the answers

    What is the main limitation of meta-analysis methods in clinical research?

    <p>They cannot control for bias in the original studies</p> Signup and view all the answers

    Which characteristic must a clinical research study have to meet the requirement of 'value'?

    <p>Enhancement of health or knowledge derived from the research</p> Signup and view all the answers

    What is the purpose of avoiding conflict of interest in clinical research?

    <p>To prevent financial or other conflicts from influencing research results</p> Signup and view all the answers

    Why is fair subject selection important in clinical research studies?

    <p>To ensure that communities and individuals are selected based on scientific objectives</p> Signup and view all the answers

    What is the purpose of independent review in clinical research studies?

    <p>Unaffiliated individuals must review the research and approve, amend, or terminate it</p> Signup and view all the answers

    Which characteristic must a clinical research study have to meet the requirement of 'scientific validity'?

    <p>Methodological rigor</p> Signup and view all the answers

    What is the main benefit of meta-analysis methods in clinical research?

    <p>They increase the power of an investigation</p> Signup and view all the answers

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