Research 101: The Health Sciences

A literature review, also called a narrative review, is an analysis of published literature used to summarize a body of literature, draw conclusions about a topic, and identify research gaps. 

Reasons to Do a Literature Review

• Summarize a research topic or concept
• Explain the background of research on a topic
• Demonstrate the importance of a topic
• Identify research gaps/suggest new areas of research

A Literature Review is NOT

• Just a summary of sources
• A review of all literature on a topic
• A paper that argues for a specific viewpoint - a good literature review should avoid bias and highlight points of disagreement in the literature

1. Choose a topic & create a research question

• Use a narrow research question for more focused search results.
• Use a question framework such as PICO to develop your research question.
• Break down your research question into search concepts.

2. Select the sources for searching & develop a search strategy

• Identify databases to search for articles in.
• Develop a comprehensive search strategy using keywords, controlled vocabularies, and Boolean operators. 
• Reach out to a librarian for help!

3. Conduct the search

• Use a consistent search strategy, keeping it as similar as possible between the different databases you use.
• Use a citation manager to organize your search results.

4. Review the references

• Review each reference and remove articles that are not relevant to your research question.
• Take notes on each reference you keep. Consider using an Excel spreadsheet or other standardized way of summarizing information from each article.

5. Summarize Findings

• Synthesize the findings from the articles you reviewed into a final paper.
• The paper should cover the themes identified in the research, explain any conflicts or disagreements in the research, identify research gaps and potential future research areas, and explain the importance of the research topic.