Depending on review type, a critical appraisal of studies found to meet inclusion criteria is to be conducted.
Critical appraisal is the process of systematically evaluating the validity of research and its relevance to specific clinical situations.
There are tools, checklists, and other resources to assist with this stage of the project and should be specified in the protocol.
After critical appraisal/quality assessment is performed, tabulate and summarize the results.
The library's Evidence Based Medicine guide includes modules for learning how to critically appraise these types of studies: