Once you have defined your question you can start the searching process. The first step in searching for studies is to locate previously conducted systematic reviews in your area of interest. This has three main purposes:
- To verify that your question hasn't already been answered
- To verify that there are no other review protocols registered with researchers already looking at the same question
- To identify related systematic reviews that will need to be accessed so that you can review the reference lists for relevant primary studies.
Useful databases for identifying systematic reviews