meta-analysis
nounPronunciation: /ˌmetəəˈnæləsɪs/
Also written as: MA
A statistical technique that combines and analyzes data from multiple independent studies to derive broader conclusions.
Full Definition
Meta-analysis is a quantitative research methodology that systematically combines results from multiple independent studies addressing similar research questions to increase statistical power and provide more robust conclusions. In abiotic stress research, meta-analyses are frequently used to synthesize findings across different experimental conditions, plant species, and stress treatments. This approach helps identify general patterns and resolve conflicting results in the literature. The technique involves statistical procedures to weight studies appropriately and assess heterogeneity between studies.
Plain English
A research method that combines results from many different studies on the same topic to get a clearer picture of what the evidence shows overall.
In Editorial Context
A type of research article that requires careful evaluation of methodology, statistical rigor, and comprehensive literature coverage during the editorial review process.
Etymology & History
Coined by Gene Glass in educational research to describe systematic combination of research findings
Originally used in psychology and education, now widely adopted across scientific disciplines
Usage
"The editorial board prioritized the meta-analysis on drought tolerance mechanisms for the special issue on water stress responses."
Usage note: Should not be confused with large studies or simple literature reviews; requires specific statistical methodology
Context: systematic reviews, evidence synthesis, journal articles, grant applications
Region: international
Also known as
Contrasted with
Don't confuse with
Often confused with systematic reviews, but meta-analysis specifically involves quantitative statistical combination of results