What benefit does compiling multiple studies provide in systematic reviews?

Compiling multiple studies provides a more reliable estimate of effects because it synthesizes findings across different settings, populations, and methodologies. This aggregation enables researchers to overcome the limitations present in individual studies, such as small sample sizes or methodological biases. By analyzing a broader dataset, systematic reviews can identify patterns, enhance statistical power, and generate more accurate estimates of treatment effects or interventions, thus leading to conclusions that are more likely to be generalizable and applicable across different contexts. This reliability is essential in guiding practice and policy decisions based on combined evidence rather than relying on potentially misleading findings from single studies.