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QUESTION 3 1. What is the main principle in identifying an appropriate control group? How can you test whether your controls meet the criteria of

QUESTION 3

1. What is the main principle in identifying an appropriate control group? How can you "test" whether your controls meet the criteria of this principle using the "would criterion"?

2. What are some sources of controls? What are the advantages and disadvantages of each?

3. Which types of bias are of concern in case-control studies? How can these biases be minimized/eliminated?

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