Ecological Studies Flashcards
(4 cards)
1
Q
What are ecological studies?
A
Studies of exposure and outcome on the population level using aggregate data.
2
Q
What analysis is done for ecological studies?
A
Correlation between exposure and outcome on population level.
3
Q
What are the advantages of ecological studies?
A
Hypothesis generation
Quick, simple, cheap
Data available
4
Q
What are the disadvantages of ecological studies?
A
Ecological fallacy
Exposure/outcome measured differently between populations
Confounding (adjustment not possible)
Non-linear associations
