Case Control Study


Step 7: Seminar Discussion Questions

Carefully consider the following questions related to your work above. Write down your answers and be prepared to discuss them in seminar.

  1. What are some of the advantages and limitations of doing a case-control study?
  2. What would you have done differently in the design of this study?
  3. Why is the selection of controls important? How else might you have selected controls?
  4. Explain what is meant by "violation of exchangeability" and give examples?
  5. What are the limitations of using surveys to assess exposure status in study subjects? What kind of bias is this? How might it affect our findings? Does our study design limit or avoid this bias?
  6. What do your findings in questions 8c and f and 9c and f tell you about the Odds Ratio?

Questions for the Intellectually Curious

  1. When does OR approximate the Rate Ratio? When does it approximate the Risk Ratio?
  2. What are some potential confounders in this study? How could we control for them?

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