Meta Analysis Flashcards
What is meta-analysis?
The combination of various independent studies’ results
Does meta-analysis take into account a studies size?
Yes
What is PICOS and what does it stand for?
It is a meta-alaysis question writing acronym
1) population
2) intervention
3) comparator
4) outcome
5) study design
What graph is used to display meta-analysis data?
Forrest plots
What is heterogeneity?
It refers to the variation in study outcomes across different studies
What is the symbol for heterogeneity and what is a good value to see?
I^2 = 0
On a Forrest plot, what does a small black square represent?
What does its size indicate?
That particular studies ‘point estimate’ = usually the relative risk
Its size denotes that studies weight
On a Forrest plot, what do the two horizontal lines extending from the small square represent?
The confidence interval for that point estimate
In a Forrest plot, what can be said if the confidence interval ranges for the risk ratios fall below 1?
That particular trial did not show a benefit from the intervention.
