Definition:
What is a meta-analysis? A meta-analysis is a type of research study in which the researcher compiles numerous previously published studies on a particular research question and re-analyzes the results to find the general trend for results across the studies.
A meta-analysis is a useful tool because it can help overcome the problem of small sample sizes in the original studies, and can help identify trends in an area of the research literature that may not be evident by merely reading the published studies.
