Why is meta-analysis better for understanding an area of research than a narrative review?

Question

Quizplus · Accepted Answer

Meta-analysis is better for understanding an area of research than a narrative review because it takes into consideration the effect sizes, researchers can examine how other variables influence effect sizes, and it helps to quantify the results of a group of studies. A narrative review may lack the quantitative analysis and synthesis of results that a meta-analysis provides.

Why Is Meta-Analysis Better for Understanding an Area of Research