Types of Studies

Question 1

Goes retrospectively, compares people with the outcome and people without the outcome to see if there was exposure to a risk factor

Answer 1

Case-Control

Question 2

Usually prospective, but occasionally retrospective. compares outcomes in group exposed to risk factor vs outcomes in groups not exposed to the risk factor

Answer 2

Cohort

Question 3

Quantifies the outcome (ie prevalence) in patients exposed to a risk factor versus the outcome in patients not exposed to a risk factor at one single point in time.

Answer 3

Cross-Sectional

Question 4

Name these studies in order of strength: meta analysis, RCT, case control, cohort, case series

Answer 4

case series–>case-control–>cohort–>meta analysis–>RCT