What type of review is most commonly conducted within systematic reviews?

Systematic reviews are comprehensive evaluations of the available literature on a specific topic or question, and they aim to synthesize research findings to provide evidence-based conclusions. Within the context of systematic reviews, intervention studies are often the focus because these studies specifically assess the effects of certain interventions or treatments.

By including intervention studies, systematic reviews can provide insights into the effectiveness, safety, and outcomes of various therapies or programs. These studies include randomized controlled trials (RCTs) and other designs that compare the effects of an intervention against a control group. This emphasis allows systematic reviews to make robust comparisons and recommendations based on evidence from multiple interventions, enhancing the reliability of the findings.

While other types of studies, such as qualitative or observational studies, can contribute valuable information, intervention studies typically provide more direct evidence regarding the efficacy of interventions, which is crucial for guiding clinical practice and health policy decisions. Thus, they are the most commonly conducted within systematic reviews, making them central to understanding how effective specific treatments can be.