Randomization is the heart of the RCT
Establish a comprehensive protocol outlining aims, objectives, and the questionnaire.
Conduct preliminary or pilot studies to validate the protocol.
Choose a suitable/reference/target population.
Select the experiment/study population.
Randomly select individuals from the reference population and match them as closely as possible.
Obtain informed consent from eligible participants.
Choose a control population based on the protocol.
Randomize the eligible population (experimental and control population).
Utilize a statistical procedure to allocate participants randomly into study and control groups.
Randomization aids in eliminating selection bias and ensures comparability.
Implement manipulation of the experimental population (e.g., vaccination).
Follow up with both the experimental and control populations.
Assess the outcome.
Potential Bias in Randomized Controlled Trials (RCT) that cannot be entirely eliminated through randomization. Blinding is implemented to mitigate these biases.
Advantages of crossover studies:
Disadvantages:
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1. What is a randomized controlled trial (RCT)? |
2. What is the difference between concurrent and parallel study designs in RCTs? |
3. Why is randomization important in RCTs? |
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