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A case-control study was conducted to determine whether use of the anti-nausea drug Bendectin was associated...

A case-control study was conducted to determine whether use of the anti-nausea drug Bendectin was associated with an increased risk of birth defects. "Cases" were mothers whose children had been born with birth defects; controls consisted of mothers of similar age and socioeconomic status who had children without birth defects. Cases and controls were selected by the same mechanism. Information about drugs taken during pregnancy was recorded by interviewers. What kind of bias should you suspect this study might be prone to, explain your answer.

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Answer #1

The kind of bias we suspect this study might be prone to: Confounding Variables Bias

Explanation:
Other than use of the anti-nausea drug Bendectin, there are many factors for birth defects, such as alcohol consumption, smoking, genetics, infections during pregnancy etc., and these confounding variables are not controlled in this experimentation.

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