As you begin searching through the literature for evidence, you will come across different types of publications. Below are examples of the most common types and explanations of what they are. Although systematic reviews and meta-analysis are considered the highest quality of evidence, not every topic will have an SR or MA.
A Literature Review Is Not:
So, what is it then?
A literature review is an integrated analysis-- not just a summary-- of scholarly writings that are related directly to your research question. That is, it represents the literature that provides background information on your topic and shows a correspondence between those writings and your research question.
A literature review may be a stand alone work or the introduction to a larger research paper, depending on the assignment. Rely heavily on the guidelines your instructor has given you.
Why is it important?
A literature review is important because it:
What is a Systematic Review?
According to the Guide to Community Preventitive Services, a systematic review for health sciences evaluates scientific studies to:
Why are Systematic Reviews important?
Systematic Reviews are important because they: