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Strengths and Weaknesses of a Dairy Farm Study

In the fall of 1974, MDPH epidemiologists conducted a study in which they collected interview, medical, and laboratory data from residents of quarantined dairy farms and from residents of an equal number of non-quarantined farms matched by geographic area and randomly selected from lists of dairy producers. Personal interviews were conducted with 298 participants: 165 from 25 quarantined farms and 133 from 25 non-quarantined farms. The interviewers collected detailed information regarding environmental exposures (including PBB) and medical history, with emphasis on changes in health since mid-1973. In 214 persons, physical examinations were performed, as well as electrocardiograms, standard clinical laboratory tests on blood and urine, and measurements of serum PBB level.

QUESTION: What are the particular strengths and potential weaknesses of this study design?

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Design: Case Control

Comparison of environmental exposures (PBB) in quarantined dairy farm residents and non quarantined diary farm residents and it's affect on changes in health since the ...

Solution Summary

This solution contains information on the strengths and weaknesses of the case control study design.