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Study Designs Used in Epidemiology


Readings from the texts

Page, et al Pages 81-133

Problems

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1. An epidemiologist from the health department in a farming state wants to test the hypothesis that exposure to pesticides used in farming increases the risk of developing certain cancers.

a. What are the advantages and disadvantages of conducting a cohort study?

b. What are the advantages and disadvantages of conducting a case-control study?

c. If you chose a case-control study, how would you choose the controls?

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2. In the Reyes' Syndrome study a second set of controls was selected. These were children from the same neighborhood as the cases. Presence of antecedent illness was not manipulated. What hypothesis could this set of controls address? On line help

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3. An epidemiologist wants to test the hypothesis that drinking surface water increases the risk of colon cancer. She will draw cases from two regions in a state. In one region the drinking water is surface water, and in another it is deep ground water. She will individually match controls to cases. Controls will be hospital based. Should region be a matching criterion also? On line help

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