Epidemiological Study Designs

Question 1

Define Risk Ratio

Answer 1

Prevalence proportions of outcome in groups defined by levels of exposure at a particular time

Question 2

Define rate ratio

Answer 2

Incidence rates of outcome in groups defined by levels of exposure after a particular time period

Question 3

Define odds ratio

Answer 3

Ratio of odds of outcome in groups defined by levels of exposure at a particular time

Question 4

How can cohort studies be analysed? (3)

Answer 4

1. Risk ratio
2. Incidence rate ratio
3. Odds ratio

Question 5

How can case-control studies be analysed?

Answer 5

• Odds ratio

Question 6

What is the null hypothesis?

Answer 6

The hypothesis that assumes the is not difference between the groups.