What is the difference between a scoping review and a systematic review?

• A. Systematic review maps breadth of literature.
• B. Scoping maps the breadth of literature.
• C. Scoping reviews synthesize evidence on a focused question.
• D. Systematic reviews focus on broad literature review.

Answer: (C)

The key idea here is how these reviews approach evidence for a defined topic. Scoping reviews are built to map out what evidence exists on a topic, showing the range of study designs, populations, interventions, and outcomes, and to identify gaps in knowledge. When there’s a clearly defined focus, a scoping review will gather the relevant studies and summarize what is known about that focus, effectively synthesizing the available evidence to give a coherent picture and to guide future work. This makes it the best fit for describing how scoping work handles evidence around a focused question.

In contrast, systematic reviews aim to answer a tightly defined question with explicit, prespecified criteria, and they emphasize thorough appraisal of study quality and often quantitative synthesis. The other options either imply that systematic reviews map breadth (which is more typical of scoping work) or suggest scoping reviews address breadth in a way that doesn’t emphasize answering a focused question with synthesized evidence.