302 Calibrating cases Flashcards
1
Q
What is a case definition?
A
Criteria for the determination of whether someone has disease
2
Q
What is a case identification?
A
The operationalisation of the case definition
- How we identify who is a case
3
Q
What are predictive values?
A
Positive Predictive Value (PPV) = likelihood patient with positive test result actually has the disease
Negative Predictive Value (NPV) = likelihood patient with negative test result does not have the disease
4
Q
What is a case-control study?
A
Groups who differ at outset on disease (condition/outcome) status
Useful for low prevalence conditions
