Epidemiology Flashcards
1
Q
Case control study
A
Retrospective study of exposure in a case group with disease and control group w/o disease.
Proportion of exposed in each group -> OR
2
Q
PPV
A
A/A+B
3
Q
NPV
A
C/C+D
4
Q
Specificity
A
B/B+D
5
Q
Sensitivity
A
A/A+C
6
Q
Likelihood ratio of + test result
A
Sensitivity/(1-specificity)
7
Q
Likelihood of - test result
A
(1-sensitivity)/specificity
8
Q
NNT
A
(1-ARR) x100
9
Q
ARR
A
1 - hazard ratio
10
Q
Cohort study
A
Prospective study compared development of disease in exposed and non exposed groups.
Incidence of disease in each group -> RR
