# Learning Objectives

A. Learn to apply the main features of case-control design:

- Formulate research hypotheses
- Define your source population and the eligibility criteria for cases and controls
- Define your exposure and outcome of interest
- Describe methods of accrual for cases and controls

B. Employ steps in data analysis of case-control studies to analyze the data:

- Calculate disease odds ratio
- Interpret your estimate

- Calculate exposure odds ratio
- Interpret your estimate

- Explain why exposure odds ratio is identical to the disease odds ratio

C. Explain your findings and discuss problems in data analysis:

- Discuss the principles of proper selection of cases and controls
- Discuss the relationship between odds ratio and risk ratio