Modules 1 and 2 - Overview of Study Design

Question 1

Rank the study designs for least to most rigorous:

A. Case series

B. RCT

C. Case control

D. Cohort

Answer 1

Case series < case control < cohort < RCT

Question 2

An analytical study must have what type of group?

Answer 2

Control/comparison population

Question 3

What type of study is described in the correct answer to this question?

Answer 3

C - propective cohort trial, in which exposure is not assigned by the study and the subjects are followed prospectively based on exposure status.

Question 4

Read and answer the following scenario.

Answer 4

D - case control studies work well for rare conditions where you are looking for exposures.

Question 5

Which of the following study designs are considered to be descriptive?

A. Case series

B. Retrospective cohort

C. Cross sectional

D. Epidemiological survey

E. Case control

F. Case report

Answer 5

A, C, D, and F are descriptive studies