Types of Analytical Studies

Question 1

What are some types of AS?

Answer 1

1. Ecological
2. Cross- sectional
3. Cohort
4. Case-Control

Question 2

Describe Ecological

Answer 2

Uses population level data

Inferences are being made about the group so you cannot infer anything about individ participants.

Generalised to the pop being studied.

Example: John Snow’s research on Cholera in London

Question 3

Describe Cross Sectional

Answer 3

Collect data on an outcome/exposure at one point in time

From a random sample of subjects.

Question 4

Describe Cohort

Answer 4

In groups with shared characteristics - Record difference in exposure and follow-up to measure occurence overtime.

Question 5

Describe Case-Control

Answer 5

Individuals with the outcome vs. individuals without the outcome.