Epidemiological study designs Flashcards
1
Q
What is descriptive epidemiology
A
Sampling so that we can infer back to population
2
Q
Analytical epidemiology
A
Comparing like for like samples
3
Q
What is an ecological study
A
An observational study often on a group /population , not individual level data
4
Q
How to conduct an ecological study
A
- identify groups to study
- decide whether analysis is to involve categorical data or continuous data
- father data on the group-level characteristics
5
Q
What are issues with ecological studies ?
A
- measurement variation
- confounding variables ( eg ecological fallacy - inferring Individual level association from group level association)
- chance ( random error )
