What is Meta-Analysis?
Meta-analysis is a research method that combines quantitative data from several studies on the same topic to identify general trends and draw stronger conclusions.
Purpose of Meta-Analysis
- Increase the reliability of findings through pooled data.
- Detect patterns or differences not visible in individual studies.
- Provide evidence-based recommendations.
The Meta-Analysis Process
- Define a research question and inclusion criteria.
- Collect and evaluate existing studies.
- Extract statistical data and perform combined analysis.
- Interpret results and assess publication bias.
Applications
- Medicine and healthcare decision-making.
- Social sciences and policy evaluation.
- Education and behavioural research.
Final Tips
Meta-analysis provides powerful evidence but depends on data quality. Use transparent methods and report findings with clear limitations.