What type of study could be categorized under level 5 evidence?

The choice identifying systematic reviews of descriptive studies as level 5 evidence is correct because level 5 typically encompasses studies that are based on qualitative data, expert opinions, and descriptive research. Systematic reviews synthesize findings from multiple descriptive studies, providing a broader perspective on a topic by integrating various findings. They evaluate the quality and relevance of the included studies, thus offering a more comprehensive understanding of the evidence in a specific area. In the hierarchy of evidence, this type of study often ranks lower than experimental designs, such as randomized controlled trials, which are considered higher-level evidence.

When determining evidence levels, systematic reviews of descriptive studies highlight trends and commonalities among varying qualitative studies, which can be valuable for guiding practice, developing guidelines, or informing future research directions. Thus, they fulfill a critical role in evidence-based nursing by providing insights that may not emerge from single studies alone.