Misc. 1 - stats Flashcards
1
Q
Positive likelihood ratio (LR+) =
A
Sensitivity / (1 - specificity)
2
Q
Explain what a (+) likelihood ratio is.
A
How likely a positive result represents a true positive
3
Q
Negative likelihood ratio (LR-) =
A
(1 - sensitivity) / specificity
4
Q
Is a better LR+ high or low?
A
High
5
Q
Is a better LR- high or low?
A
Low
6
Q
NNT =
A
1/ARR
7
Q
RR =
A
(AR in Tx group) / (AR in control group)
8
Q
Relative risk reduction (RRR) =
A
1 - RR
