The Importance of Scoping Reviews in Evidence Synthesis

The Importance of Scoping Reviews in Evidence Synthesis

Scoping reviews play a crucial role in evidence synthesis by providing a comprehensive overview of a particular topic. This article aims to delve into the significance of scoping reviews and the framework that guides their execution.

Scoping reviews, as defined by Arksey and O'Malley, are a type of literature review that aims to map the existing evidence on a broad topic. They differ from systematic reviews in that they do not aim to answer specific research questions but rather provide an overview of the available evidence (Arksey & O'Malley, 2005). Levac and colleagues have further developed the scoping review framework, incorporating various stages and processes to guide researchers in conducting a scoping review effectively (Peters et al., 2015).

The scoping review framework consists of several phases, each with its own unique purpose and methodological approach. These phases include identifying the research question, searching for relevant studies, selecting and charting the data, collating, summarizing, and reporting the results (JBI Manual for Evidence Synthesis). By following these phases, researchers can ensure a systematic and transparent approach to conducting a scoping review.

One of the key benefits of scoping reviews is their ability to map the existing evidence on a broad topic. Unlike systematic reviews which focus on answering specific research questions, scoping reviews provide a comprehensive overview of the available literature. This can be particularly valuable in emerging fields or topics where the evidence is scattered or limited. By mapping the existing evidence, scoping reviews can identify research gaps and areas for future investigation.

Moreover, scoping reviews also serve as a valuable tool for policymakers and practitioners. The comprehensive nature of scoping reviews allows policymakers to gain a better understanding of the current evidence base on a specific topic. This knowledge can inform policy decisions, resource allocation, and the development of guidelines or interventions. Similarly, practitioners can benefit from scoping reviews by gaining insights into the available interventions, best practices, and areas where further research is needed.

To ensure the success of a scoping review, researchers should consider three actionable advice:

1. Clearly define the research question: Before embarking on a scoping review, it is essential to clearly define the research question or objective. A well-defined research question will guide the search strategy, study selection, and data extraction process.

2. Conduct a comprehensive literature search: To ensure the completeness of the scoping review, researchers should conduct a comprehensive literature search. This includes searching multiple databases, grey literature, and consulting experts in the field. By casting a wide net, researchers can minimize the risk of missing relevant studies.

3. Engage in a rigorous and transparent process: Transparency and rigor are key principles in conducting a scoping review. Researchers should document their search strategy, study selection criteria, and data extraction process in detail. This will allow for reproducibility and enhance the credibility of the scoping review.

In conclusion, scoping reviews are an essential component of evidence synthesis. They provide a comprehensive overview of the available evidence on a specific topic, allowing researchers to identify research gaps and inform future investigations. Policymakers and practitioners can also benefit from scoping reviews by gaining insights into the current evidence base and guiding decision-making. By following the scoping review framework and incorporating the aforementioned advice, researchers can conduct robust and impactful scoping reviews.