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Data Transfer Errors in Research

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Questions and Answers

Which type of studies are most affected by information bias?

Studies that use objective measurements

Studies that rely on self-reports (correct)

Studies that use only medical records

Studies that use only biomarkers

What is the purpose of using multiple measurement tools?

To decrease the study duration

To increase participant burden

To increase the sample size

To reduce measurement error (correct)

What can be used to confirm disease status?

Only pharmaceutical treatment administered

Only participant self-reports

Only medical records

Information from participants' personal GP, medical or other health records (correct)

What happens when a study relies solely on self-reports?

It should be assumed that information bias is operating to some extent Signup and view all the answers

What is the effect of information bias on study results?

It compromises the validity of the study results Signup and view all the answers

Why did AD patients tend to report less physical activity than controls in the example study?

They had poor recall Signup and view all the answers

What is an example of information bias in the study on physical activity and Alzheimer's Disease?

Relying on participant self-reports Signup and view all the answers

What type of design was the study on physical activity and Alzheimer's Disease?

Retrospective design Signup and view all the answers

What is the association that was investigated in the example study?

Association between physical activity and Alzheimer's Disease Signup and view all the answers

What is a limitation of relying on self-reports in the study?

It introduces information bias Signup and view all the answers