Meta-analysis
This is an old revision of this page, as edited by Learn together (talk | contribs) at 06:08, August 2, 2007. It may differ significantly from current revision.
A meta-analysis is a statistical technique that combines the result of several studies in order to test a research hypothesis.
There are possible weaknesses to this approach:
- It is harder to control sources of bias since multiple studies are involved.
- A bias towards a predetermined outcome can influence the choice of studies to combine.