To prepare for this Discussion:
• Review the types of bias listed below.
o
o Non-differential recall bias
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o Differential recall bias
o
o Publication bias
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o Loss to follow-up
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o Refusal to participate
o
o Interviewer bias
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o Confounding
Select one type of bias from the list above, and consider the ways that bias could impact a study.
To complete this Discussion, post a real or hypothetical example of one study by Day 4. You can use one of the studies you designed during Weeks 3 or 4 or search for a different study.
•
• How could bias be introduced in the study?
•
• Would the bias be considered a selection bias or an information bias? Why?
•
• Name two or three variables that might be possible confounders in your study.
•
• Describe at least one method of controlling those confounding variables.
resource:……………………………….
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