Question: A study used self-administered mail questionnaires to gather data on height and weight in order to calculate a measure of obesity. Which of the following
A study used self-administered mail questionnaires to gather data on height and weight in order to calculate a measure of obesity. Which of the following types of problems were likely avoided by this method of data collection, and why?
Interviewer bias
Exposure misclassification
Confounding
Selection bias
Loss-to-follow-up
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