Epidemiology Bias Quiz Form
Test your knowledge of epidemiology bias concepts. Please answer all questions to the best of your ability.
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Which of the following best defines selection bias?
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A systematic error due to non-random selection of study participants.
An error in measuring the outcome.
A random error due to chance.
Other
Which type of bias is most likely when study participants are lost to follow-up?
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Attrition bias
Recall bias
Information bias
Other
Confounding is best described as:
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A mixing of effects between the exposure, the outcome, and a third variable.
A random error in data collection.
A type of measurement bias.
Other
Which scenario is an example of recall bias?
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Cases remember past exposures differently than controls.
Participants are randomly assigned to groups.
Data is collected prospectively.
Other
How likely are you to identify bias in a published epidemiology study?
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Not at all likely
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2
3
4
Extremely likely
5
1 is Not at all likely, 5 is Extremely likely
Match the type of bias to its description.
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Rows
Selection Bias
Information Bias
Attrition Bias
Description
Non-random participant selection
Measurement error
Loss to follow-up
Non-random participant selection
Measurement error
Loss to follow-up
Non-random participant selection
Measurement error
Loss to follow-up
Which of the following strategies helps reduce confounding?
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Randomization
Matching
Restriction
Other
Rate your confidence in your answers to this quiz.
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1
2
3
4
5
Briefly explain why understanding bias is important in epidemiology.
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