EBM Flashcards
1
Q
Type I v Type II Error
A
Type I - chance of false pos (incorrectly reject the null)
- ALPHA
Type II -chance of false neg (incorrectly accept null)
- BETA (power is 1-beta)
2
Q
PPV
A
true pos / (true pos + false pos)
3
Q
NPV
A
true neg / (true neg + false neg)
4
Q
Sensitivity
A
true pos / (true pos + false neg)
5
Q
Specificity
A
true neg / (true neg + false pos)
6
Q
ARR
A
risk group 1 - risk group 2
7
Q
NNT
A
1 / ARR
8
Q
RRR
A
(risk group 1 - risk group 2 ) / risk group 1
9
Q
Std Mortality Ratio
A
observed deaths in given population/expected deaths
10
Q
Pos Likelihood Ratio
A
sens / (1 - spec)
11
Q
Neg Likelihood Ratio
A
(1-sens) / spec
12
Q
Odds Ratio
A
(a/c) / (b/d)
chance of outcome in group 1 / chance of outcome in group 2
