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Old 10-31-2015
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Default biostat Q

In a population with a high incidence of cardiovascular disease, diabetics are at least twice as likely to die from myocardial infarction as are non-diabetics. A case-control study conducted in the community identifies 1,000 people with sustained myocardial infarction and 1,000 people without sustained myocardial infarction. The subjects are asked whether they have a history of diabetes mellitus. According to the study results, diabetes has a protective effect against myocardial infarction. Which of the following best explains the observed study results?
A. Latent period
B. Selection bias
C. Observer bias
D. Hawthorne effect
E. Recall bias
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Old 10-31-2015
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selection bias
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Old 11-06-2015
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Selection bias
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We are what we repeatedly do. Excellence, then, is not an act, but a habit.
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