7- key statistics in evidence based medicine Flashcards
1
Q
incidence vs prevalence
A
incidence- measures the number of new cases of a particular disease arising in a population over a time period
prevalence- measures all cases of disease existing in a given population at a given time point
2
Q
risk ratio
A
incidence in group A / incidence in group B
3
Q
odds ratio
A
odds of outcome exposed / odds of outcome unexposed
4
Q
what is absolute risk
A
the risk of acquiring a given disease over a period of time.
5
Q
absolute risk difference
A
control event rate (unexposed) - intervention event rate (exposed)
6
Q
what does a CI have to be to be significant
A
above or below one
7
Q
what does the mean absolute difference have to be to be significant
A
above or below zero
