Step 1: Note the design(s) of the studies to be included in your review
Step 2: Identify the type(s) of quality assessment tool(s) to suit your review
Step 3: Source appropriate quality assessment tool(s)
Step 4: Carry out quality assessment using the appropriate tool(s)
Step 5: Tabulate and summarize the results of your quality assessment
Step 6: Think about how the quality assessment results might impact on the recommendations and conclusions of your systematic review
Greenhalgh, J., & Brown, T. (2014). Quality assessment. In A. Boland, M.G. Cherry R. Dickson (Eds.), Doing a systematic review: A student's guide (pp.37-59). London: SAGE.