Ecological Study:

Question 1

Descriptive or analytic?

Answer 1

Descriptive

Question 2

Observational or interventional?

Answer 2

Observational

Question 3

What it is used to measure:

Answer 3

Can be used to measure exposures and outcomes across groups. Every data point is a population

Question 4

Strengths:

Answer 4

Data is often routinely collected and readily available

Easy and inexpensive

Useful for considering hypothesis

Good for population level exposures

Question 5

Limitations:

Answer 5

Ecological fallacy

Cannot control for confounding

Cannot show causation

Question 6

Measure of Occurrence:

Answer 6

Prevalence

Question 7

Measure of Association:

Answer 7

Can’t calculate