The protocol should detail the criteria considered when determining methodological quality of papers to include in the review. JBI tools should be used preferentially; if not clear reasoning should be provided. Critical appraisal tools must be appended to the protocol. For questions assessing incidence, the critical appraisal tool should be selected based on the type of study design retrieved from the search process. However, as prevalence data may be sourced from a number of study designs (including RCTs), a critical appraisal checklist specifically for prevalence studies has been developed. Critical appraisal must be conducted by two reviewers independently of each other. The reviewers should then meet to discuss the results of their critical appraisal for their final appraisal. If the two reviewers disagree on the final critical appraisal and this cannot be resolved through discussion, a third reviewer may be required.