10 Questions
Which type of studies are most affected by information bias?
Studies that rely on self-reports
What is the purpose of using multiple measurement tools?
To reduce measurement error
What can be used to confirm disease status?
Information from participants' personal GP, medical or other health records
What happens when a study relies solely on self-reports?
It should be assumed that information bias is operating to some extent
What is the effect of information bias on study results?
It compromises the validity of the study results
Why did AD patients tend to report less physical activity than controls in the example study?
They had poor recall
What is an example of information bias in the study on physical activity and Alzheimer's Disease?
Relying on participant self-reports
What type of design was the study on physical activity and Alzheimer's Disease?
Retrospective design
What is the association that was investigated in the example study?
Association between physical activity and Alzheimer's Disease
What is a limitation of relying on self-reports in the study?
It introduces information bias
Test your understanding of common mistakes made when transferring data from paper forms to electronic datasets, including errors in height, waist, and disease status measurements. Learn to identify and avoid these errors in your research.
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