Assessment of disease risk

Question 1

What are the ranges for the risk of a disease?

Answer 1

1=certain to happen

0=certain not to happen

Question 2

What is the risk ratio a measure of?

Answer 2

• Relative risk

- Ratio of the risk of disease in the exposed group and the risk of disease in the unexposed group

Question 3

What are odds?

Answer 3

probability/risk of a particular outcome happening

Question 4

What is the odds ratio?

Answer 4

The measure that is calculated to represent the relative risk for a case-control study.

Question 5

What does a relative risk of 1 mean?

Answer 5

• The risk/odds in the exposed group is the same as the risk/odds in the unexposed group
• There is indication of neither benefit nor harm.

Question 6

What does a relative risk greater than 1 mean?

Answer 6

When the relative risk is greater than one, then the exposed group have greater risk/odds of contracting the disease, so the expose is associated with harm.

Question 7

What does a relative risk less than 1 mean?

Answer 7

When the relative risk is less than one then the exposure is associated with a protective effect.