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Randomized Controlled Trials (RCTs) in Research

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Questions and Answers

What is the primary reason for registering a Randomised Controlled Trial on a national or international clinical trials register?

To compare the results with other trials

To ensure the trial is adequately powered

To specify the full protocol for the trial (correct)

To randomly assign participants to conditions

What is the purpose of a wait list control condition in a Randomised Controlled Trial?

To provide a placebo effect

To assess the effectiveness of the intervention

To compare the intervention to a standard treatment

To receive no treatment and serve as a baseline (correct)

When should assessment be conducted in a Randomised Controlled Trial?

Only at the 6 and 12 months follow-up points

Only before the intervention

Both before and after the intervention, with additional follow-up points (correct)

Only after the intervention has been completed

What is the main purpose of adequately powering a Randomised Controlled Trial?

To detect a difference between conditions if it exists Signup and view all the answers

What is the primary benefit of randomly assigning participants to conditions in a Randomised Controlled Trial?

To reduce bias and ensure equitable distribution of participants Signup and view all the answers

What was the primary focus of the randomised controlled trial described in the text?

Comparing the efficacy of different delivery modalities of the intervention Signup and view all the answers

How many sessions were there for the parents and the children in the intervention?

Six sessions for parents and six sessions for children Signup and view all the answers

What was the criteria for the children to be included in the trial?

They had to be 7 to 14 years of age, and meet the criteria for at least one clinically significant anxiety disorder Signup and view all the answers

How did the therapist-supported bibliotherapy condition differ from the clinic-based individual therapy condition?

The delivery modality was different Signup and view all the answers

What was the purpose of the wait list control condition in the trial?

To have a group that received no treatment for 12 weeks Signup and view all the answers