Prospective Cohort Study:

Question 1

Descriptive or analytic?

Answer 1

Analytical

Question 2

Observational or interventional?

Answer 2

Observational

Question 3

What it is used to measure:

Answer 3

Individuals are defined on the basis of the presence of absence of an exposure and they are followed up to see if they develop the disease.

Question 4

Strengths:

Answer 4

Good for studying rare exposures

Determine temporal sequence between an exposure and an outcome

Can examine multiple outcomes

Question 5

Limitations:

Answer 5

Loss to follow up

Potential for misclassification

Not good for rare outcomes

Time consuming

Potentially quite expensive

Healthy worker effect may cause bias

Potential for participants to have a change in exposure status

Question 6

Measure of Occurrence:

Answer 6

Incidence proportion

Incidence rate

Question 7

Measure of Association:

Answer 7

Relative risk

Risk difference