A. Learn to apply the main features of a cohort study

1. Formulate a research hypothesis
2. Define the 'at risk' population
3. Define eligibility criteria for study participants
4. Define exposure and outcome
5. Understand cohort studies based on the timing of events
   • Prospective
   • Retrospective

B. Conduct data analyses consistent with a cohort design

1. Calculate and interpret the risk ratio using frequencies
2. Calculate and interpret the rate ratio using person-time information
3. Calculate and interpret the standardized incidence ratio (SIR)

C. Interpret your findings

1. Understand the differences between a risk ratio and a rate ratio
2. Discuss how subgroup analyses influence our certainty about study results
3. Discuss the value of age standardization