HadPop - Lecture 10 Flashcards
1
Q
How do you conduct a case controlled trial?
A
Identify a group of cases
identify a group of non cases
Identify the previous exposure status of everyone
Compare levels of exposure in the two groups
2
Q
How do you analyse a case controlled study .
A
- ODDS ratio
3
Q
How to calculate odds ratio?
A
Odds of disease in exposed / odds of disease in unexposed
4
Q
What affects your odds ratio?
A
- Number of healthy people and the number of cases
5
Q
What are the problems with case controlled studies?
A
Selection bias
Recall bias
Interviewer bias
Confounding
