Meta-analysis is combining the results of many studies on the same topic to get a clearer picture. Instead of just looking at one study, researchers gather information from multiple studies and analyze it together. This helps them see if there are consistent patterns or trends across different research findings.

How do researchers do a Meta Analysis?

Before doing a meta-analysis, researchers first do a systematic review to gather and evaluate all the relevant evidence. They follow these steps:

How significant is the result of a Meta Analysis?

                        It is the most significant  evidence in the hierarchy of scientific evidence

Conclusion:

                        Meta-analysis synthesizes evidence, enhancing research validity by aggregating findings. It stands atop the evidence hierarchy pyramid for its comprehensive approach.